Fish That Start With M

Muskies, mackerel, and monkfish may be familiar to you, but can you name a mustache Zamora? Researching and discussing specific species of fish is easier when you know both the common and scientific names. Becoming an expert is never a bad thing. The following list offers some fish names that begin with M.

List Of Fish That Start With M

1. Madagascar Rainbowfish

Fish That Start With M
Arizona Aquatic Gardens

Scientific Name – Bedotia geayi

The Mananjary River basin in Madagascar is home to this freshwater fish. He prefers the quiet, shaded waters of small streams where he grows up to 12 cm in length. An aquarium can easily be set up to house Madagascar rainbowfish, which are very easy to care for. Their rainbow-colored bodies make them look very enticing.

First discovered in 1907, the Madagascar Rainbowfish, scientifically known as Bedotia geayi, are the only known rainbowfish in the world. Additionally, they also go by names such as Madagascar Rainbow Fish and Red-tailed Silverside.

It belongs to the family Bedotiidae as well as to two other genera, Betodia and Rheocles. The Mananjary river in Madagascar is clear and swiftly flowing, where they live. In spite of their distinctive ecology, Bedotia madagascarensis is primarily a river fish.

This Madagascar rainbowfish has a long, slender, and strong dorsal fin and a long and slender body. A pale yellowish-brown color and a light sheen characterize the body of these fish species. There is more depth to the dorsal fin. That’s why their pairs of swinging dorsal fins look too beautiful to resist.

Moreover, a very heavy, dark blue band runs along their entire body, accompanied by another shorter band underneath.

2. Malawi Eyebiter

Malawi Eyebiter

Scientific Name – Dimidiochromis compressiceps

These aggressive dogs originated in Lake Malawi, Africa, and are known for biting the eyes out of prey (hence their name). About 23 centimeters (9.1 inches) is the maximum length of Dimidiochromis compressiceps.

It has smaller females than males. Due to its narrow head and lateral compression, the body is not visible from afar (hence its Latin name compressiceps). Approximately one-third of the body length is occupied by the mouth and jaws, which are both quite large.

Cichlids in this species can normally be recognized by their whitish-silver body with a horizontal brown stripe running along the sides, from the snout to the tail. A mature male puts on a spectacular display of metallic blue and red on his fins.

Tanzania, Malawi, and Mozambique are home to this species. It is native to the lakes Malawi and Malombe, as well as the upper Shire River in East Africa.

3. Mangrove Red Snapper

Mangrove Red Snapper

Scientific Name – Lutjanus argentimaculatus

The subtropical reef-dwelling fish can be found throughout the world from East Africa to Samoa to Australia. The Indo-Pacific region considers them a prized food fish.

This species of ray-finned fish, a snapper belonging to the family Lutjanidae, is also known as the mangrove jack, grey snapper, creek red bream, Stuart evader, dog bream, purple sea perch, red bream, red perch, red reef bream, river roman and rock barramundi. Its range extends from the Indo-Pacific to the eastern Mediterranean Sea, where it was recorded recently.

Depending on its age and environment, the mangrove red snapper has a variety of colors, from burnt orange to bronze and deep reddish brown. The younger fish caught along estuarine shorelines often exhibit lighter vertical bands along their flanks than older fish caught along offshore reef lines.

These mangrove jacks have canine teeth that are used to grasp and hold prey in their jaws, similar to snappers in the family Lutjanidae. Unwary fishermen can suffer serious injuries from these sharp teeth.

Mangrove red snapper and red bass (Lutjanus bohar), known carriers of the ciguatera toxin, are sometimes mistaken for one another in reef areas. Although red bass is usually darker in coloration, they have fewer dorsal-fin spines, scale rows running parallel to the lateral line on their back, and a deep groove where their nostrils meet their eyes.

4. Many Banded Shell-Dweller

Many Banded Shell-Dweller

Scientific Name – Neolamprologus multifasciatus

Its eggs are laid inside an empty snail shell, which it buries until only the opening is visible. This breed is native to Lake Tanganyika. It is found predominantly in open sandy areas with a high concentration of Neothuma snail shells on Lake Tanganyika. During the night, the snails provide shelter for the cichlids.

The male is larger than the female, but it is difficult to identify. In addition, females are noticeably smaller than males, with a total length of less than 2.5 cm. The snail shell is the home of these very small cichlids.

Neolamprologus similis can be confused with them, but their stripes make them easy to distinguish – similis appears to have light stripes on a dark body, whereas multifasciatus appears to have dark stripes on a light body.

A similis pair should also be kept in such a small tank, though they will not live in a harem in 10 gals. Knowing the difference is important. Snail shells are home to this species. In order to move these snail shells, the fish will do a great amount of digging, so rooted plants, unless they are potted, are probably not a good idea.

5. Marbled Hatchetfish

Marbled Hatchetfish
LiveAquaria

Scientific Name – Carnegiella strigata

Its unique appearance ensures that your marble hatchet fish will always cling to the top of your tank. The marble hatchet fish seems to do better than the other hatchet fish in the home aquarium despite their reputation for being one of the harder species to care for.

It is important that Hatchet Fish are slowly acclimated to an established aquarium with a nitrogen cycle that is complete. With peaceful tank mates in a small group of 6 or more, they are really at their best.

As Marble Hatchet Fish jump well, you’ll need a hood that won’t provide them with any escape points so they can’t jump out. When they’re kept with fish that are skittish, there’s an increased chance they’ll jump out. If you want to avoid a fish tank spooking, turn on the room lights first.

As hatchet fish tend to be wild captured, you should prepare a quarantine tank before you introduce them to your main tank for a few weeks. Fish foods like flakes, frozen and freeze-dried foods, as well as live foods will be tolerated by this species of Hatchetfish.

The species is found in rivers throughout South America and is relatively small (up to 3.5 cm). These creatures are attracted to blackwater, which is an acidic, dark liquid filled with decaying organic matter. If startled they can jump out of the tanks. So keep them in containers with lids.

This small ray-finned fish is native to South America, and is normally 3.5 cm in length. Hatchet-shaped in shape, it has a gold line extending from its eye down to its caudal fin, while the underside has a pattern resembling a marble (hence its name).

6. Masked Julie

Masked Julie
Aquatic Arts

Scientific Name – Julidochromis transcriptus

The smallest Julie fish species is 7 cm long. The smallest Julie fish species is native to Lake Tanganyika. Black and white stripes can be found along with its several fins as well as a bright blue line. The Masked Julie occurs in shallow, sediment-rich subaquatic habitats on the rocky shores of Lake Tanganyika’s north-western shore.

Rocks and rubble tend to form their territories around cracks. In addition to the algae-encrusted substrate and drifting plankton, the natural diet primarily consists of small crustaceans, insect larvae, and molluscs.

Aquariums housing this species need to have a minimum of 3ft of length, a decent amount of filtration, water movement, and oxygenation. Coral sand or aragonite are the best substrate choices because they maintain hard and alkaline water.

Ample caves and crevices should be created by using rocks, ensuring that there are many breaks in the line of sight. J. scriptus can sometimes be rather aggressive towards each other in confined aquariums, so it is best for them to be kept singly or in compatible pairs.

Tanganyikan communities can be maintained with these cichlids, which can be kept in different parts of the tank with fish of similar size and temperament; do not mix them with other Julidochromis species, however.

Multiplying the number of fish in the tank is possible if there are plenty of territories to go around (more than one for each fish), as well as visual barriers. It is important to perform frequent partial water changes on masked Julies since they are very sensitive to dirty water.

7. Mudskipper

Mudskipper

Scientific Name – Periophthalmus novemraditus

In India, Southeast Asia, and the Philippines, this amphibian is commonly known as the Indian Mudskipper or Pearse’s Mudskipper. The pelvic fins of these fish allow them to climb walls of aquariums if kept without a lid.

Amphibian fish, mudskippers can live in both water and land. Oxudercidae and Oxudercinae are members of the family. Mudskippers have 32 different species. In addition to having an unusual appearance, they are able to survive both inside and outside of water.

Most are brownish green and range in color from dark to light. They can grow to 30 centimeters (12 inches) long. Females are also attracted to males with brightly-colored spots during the breeding season. Red, green and blue spots are common.

On the flathead of a mudskipper are protruding eyes. One of the most distinctive features of these fish is their side pectoral fins that are located more forward and under their long bodies. As the fins move the mudskipper from place to place, they act similarly to legs.

While mudskippers look like any other fish, their forward fins have the ability to “skip” across muddy surfaces and even climb low branches and trees. It has also been found that mudskippers are capable of leaping two feet due to their fins.

8. Macmaster’s Dwarf Cichlid

Macmaster's Dwarf Cichlid

Scientific Name – Apistogramma macmasteri

If you want to create a peaceful SA community pond, MacMaster’s Cichlids make a great addition, but be aware that tank-bred specimens tend to be harder than wild specimens. Wild specimens are more likely to be aggressive, especially during spawning season, and demand pristine water conditions.

Alternatively, keep them in a smaller aquarium as a species only set up if you wish to keep other species of similar size. However, they can be hostile towards other Apistogramma, so if keeping these it is best to keep them with other species or in a smaller aquarium as a species only set up.

Plant a planted aquarium and keep the water soft and acidic for MacMaster’s dwarf cichlids. Although they can tolerate harder water, their true colors might not appear. 

Plants and rocks can be used to create hiding spots. It is best to avoid bright lighting and hide places if they are skittish if they don’t feel secure. Plants with reduced light requirements must be carefully chosen.

Additionally, floating plants help dim the lighting to a suitable level, both for aesthetic reasons and for practical purposes. Water changes must be made at a reasonable percentage of 10% in order to avoid unstable water parameters. In doing so, these fish will be able to flourish.

9. Macculloch’s Rainbowfish

Macculloch's Rainbowfish
Home of the Rainbowfish

Scientific Name – Melanotaenia maccullochi

Its scientific name is Melanotaenia maccullochi, and it has been described scientifically by O’Gilby since 1915. Originally collected in Australia, it was named after the Barron River. Aquarists now commonly keep this fish in aquariums since it easily spawns in them and has been exported to Europe since 1934.

Rainbowfish of the MacCulloch species can grow to a length of nearly 7 cm (just over 3 inches). There are a number of small species in the Melanotaenia genus. Silvery white on the body (sometimes yellowish) and reddish brown stripes run along the side of the fish.

Papua New Guinea and the northernmost part of the Cape York Peninsula in Australia are the locations where specimens of Melanotaenia maccullochi are most likely to be found. There is a distinctly yellow tint to these fishes, and their dorsal and anal fins are patterned with prominent black stripes.

Instead, you will probably find fish with duller colors and paler stripes if you purchase specimens from coastal Queensland. Fin stripes are sometimes absent altogether in some specimens.

Aquarists still appreciate the coastal Queenslands nevertheless because some specimens compensate for their overall dull appearance with vibrant red fins that are in stark contrast to their drab bodies. The red-finned rainbowfish is sometimes sold under this name. There is no such species as MacCulloch’s Rainbowfish, only a variant of it.

10. Madeirae Swamp Eel

Madeirae Swamp Eel

Scientific Name – Synbranchus madeirae

A swamp eel is a freshwater fish in the tropics and subtropics belonging to the Synbranchidae family of fishes. In marshes, ponds and damp places, most species of organisms can breathe air, burying themselves in the mud if the water source dries up.

Due to their lifestyle, they have various adaptations, such as long bodies, short and slender legs, and limbless vertebrates, as they lack pectoral and pelvic fins. Their gills open in a slit or pore on their throat and they do not possess scales or a swimbladder. Blood vessels in the lining of the mouth and pharynx allow oxygen to be absorbed. This makes these tissues act like lungs.

Despite having no fins as adults, swamp eels have large pectoral fins which are used to fan water over their bodies, ensuring gas exchange before their adult breathing apparatus forms. They shed these fins a few days after becoming adults.

Many swamp eels are hermaphrodites, beginning their lives as females and later changing into males, although some start their lives in male form and do not go through this process. In Jiangnan, swamp eels are a delicacy and are commonly used to make stir-fries and casseroles. Kusia is the local name in Assam. In Assamese cuisine, it is prepared with curry as a delicacy.

11. Magnificent Rasbora

Magnificent Rasbora

Scientific Name – Rasbora borapetensis

The caudal fin of the False Magnificent Rasbora is adorned with dark red areas. Additionally, they exhibit a black line running along the midline of their bodies from behind their gills. A less-than-optimal environment will result in a paler red area on the tail.

The presence of floating plants will help to reduce the intensity of the lighting, while the addition of aquarium peat will help to maintain the water’s quality. The genus Rasbora belongs to the cyprinidae family.

In South and Southeast Asia as well as southeast China, they are endemic to freshwater habitats. The only known species, Rhizophorus Gerlachi, comes from an old specimen reputed to come from Africa (Cameroon), although it’s uncertain where the specimen came from.

The species are relatively small, reaching a maximum length of 17 centimeters (6.7 inches). However, most species will not exceed 10 centimeters (4 inches), and many have a dark horizontal stripe.

Aquariums contain a variety of species. As an English common name for many types of Rasbora, “rasbora” is used for many species of Rasbora, as well as many species of Brevibora, Boraras, Megarasbora, Metzia, Microdevario, Microrasbora, Rasboroides, Rasbosoma, Sawbwa, Trigonopoma, and Trigonostigma.

There was once an inclusion of some of these genera in Rasbora. During a 2007 analysis, Rasbora was determined to be a polyphyletic assemblage. Trigonostigma and Boraras, however, have been determined to be monophyletic.

12. Malabar Pufferfish

Malabar Pufferfish

Scientific Name – Carinotetraodon travancoricus

Dwarf pufferfish (Carinotetraodon travancoricus) are small, freshwater pufferfish endemic to Kerala and southern Karnataka in Southwest India. The species is commonly called Malabar pufferfish (causing confusion with the species C. imitator), pea pufferfish, or pygmy pufferfish. Overfishing for aquariums and habitat loss are threatening it.

It is one of the smallest pufferfishes in the world, reaching a max size of 3.5 cm (1.4 in). Despite the fact that they are closely related to marine pufferfish, they do not occur in saltwater, so reports to the contrary are incorrect.

Fish that mature “choose” their sex are unable to be sexed when they are juveniles. If two pufferfish begin to mature into males at the same time, one will become dominant. [citation needed] However, if both become males at the same time, one will be dominant.

The dorsal crest is also present, although it lacks special coloration when it isn’t erect. During courtship, the male displays both crests while circling the female. Yellow coloration is also prominent.

Both sexes are primarily yellow with dark green to black iridescent patches on the flanks and dorsal surface. As with other species of this genus, there is a marked difference in sexual dimorphism between males and females in terms of color.

Occasionally, males may also develop iridescent “eye wrinkles” on their pale bellies and a dark stripe down the middle of their pale belly. Compared to males, females are rounder and have a bit larger size, and may or may not have more tiny spots between their large dark spots.

13. Malarmo Catfish

Malarmo Catfish

Scientific Name – Platysilurus malarmo

South American Platysilurus are long-whiskered catfishes. Calophysus-Pimelodus is the clade that Platysilurus belongs to. Phylogenetic studies place Parapimelodus in the “Pimelodus-group” of Pimelodids, along with Exallodontus, Iheringichthys, Bergiaria, Bagropsis, Parapimelodus, and Platystomatichthys.

Lake Maracaibo basin is home to P. malarmo. The Amazon River Basin and the Orinoco River Basin are habitats of P. mucosus. Ecuador is home to P. olallae. Its height is 70 centimeters (28 in). In its adult form, P. mucosus reaches at least 20 cm (7.9 in) in length.

14. Malawi Blue Dolphin

Malawi Blue Dolphin

Scientific Name – Cyrtocara moorii

This exotic fish comes from Lake Malawi in Africa and is known as Cyrtocara moorii (previously Haplochromis moorii). By the time it reaches almost 10 inches in length (25.4 cm), it is quite large. Depending on where it comes from, each individual bears different amounts of black markings.

With age, the head develops a large bump, and the body becomes compact and elongated with an elongated snout. A large cichlid aquarium would benefit greatly from its gorgeous color and interesting form.

Cichlids get a pronounced hump on their heads as they mature, whether it’s a male or a female. It is located just above and behind the pointy tip of its snout, at the front of its body. Despite its smaller size, it has distinctive features like a dolphin.

A number of names have been given to this species, including Malawi Blue Dolphin, Blue Dolphin Cichlid, Blue Lumphead, and Humphead Mouthbrooder. A hump rises on the top of their forehead that gives them a distinctive appearance. They come in various shades of blue, ranging from turquoise to silvery-blue. Males are usually more vibrantly blue than females.

15. Malawi Golden Cichlid

Malawi Golden Cichlid

Scientific Name – Melanochromis auratus

A freshwater fish of the cichlid family, Melanochromis auratus is a cichlid known as the auratus cichlid. A golden mbuna is sometimes called a Malawi golden cichlid. Lake Malawi, especially along the western coast, southward of Jalo Reef to Crocodile Rocks, is home to this endemic species.

Cichlids belonging to the genus Auratus are small, elongated fish that can grow up to 11 centimeters (4.3 inches). Young and females have yellow bodies with black and white stripes above. Male adults have a darker shade of brown or black on their bodies with lighter shades of blue or yellow on their upper half.

Mbuna cichlids, such as the auratus cichlid, are among the most popular marine fish in aquariums. The dominant male usually appears black in aquarium stores, while the rest will be yellow and submissive “female”. After the sale of this dominant male, another dominant male of a black hue will emerge.

In addition to mouthbrooders, auratus cichlids live in Lake Malawi. During the first few weeks of a female’s pregnancy, she holds her fertilized eggs in her mouth before releasing the fry.

16. Malay Combtail

Malay Combtail

Scientific Name – Belontia hasselti

There are three species of gouramis in southeast Asia, these being the Malay combtail (Belontia hasselti), the Greater Sunda combtail, and the larger combtail (Belontia shiptonii). The species can grow up to 20 centimeters (7.9 in) long.

There is also a trade in aquariums for this species. Java was designated as the type locality of this species by Georges Cuvier in 1831. Coenraad van Hasselt (1797-1823), the Dutch physician and zoologist whom Cuvier honors in its special name, collected the type specimen in 1820 with Heinrich Kuhl.

Fish with an elongated oval shape and narrow nose and a straight back. Colors range from pale green to yellow in its body, which is slightly iridescent. Several yellow or green spots are visible along with its fins.

Most of the time, this fish is shy and only aggressive when it is breeding. The fish lays motionless on the substrate when sleeping. As long as ammonia, nitrite, etc. are checked by frequent water changes, it does not care about water parameters. Ample hiding places are recommended and dense planting is appreciated.

Native to southern Indochina, stretching from southern (peninsular) Thailand, through Peninsular Malaysia, Singapore, and the Greater Sundanese Islands of Sumatra, Borneo, and Java. Northern Borneo may not contain this species.

17. Manchurian Spiny Loach

Manchurian Spiny Loach fish

Scientific Name – Leptobotia mantschurica

A common freshwater fish in Europe, the spined loach (Cobitis taenia) stays in the summer months. Weather loaches of the genus Misgurnus are sometimes known as spotted weather loaches, not the spotted weather loaches. Known as the type species of the spiny loach family (Cobitis), it is also the type species of the genus Cobitis.

Female spined loaches can grow up to 12 cm (4.7 in) in length, but the average adult length is 8–10 cm (3.1–3.9 in). An adult weighs between 20 and 60 g (0.7 and 2.1 oz). Among the many small scales on the spinal ridge, their backs have a yellow-brown coloring.

They have pale yellow-orange scales on their belly. Overall, their bodies are long and thin. Around the mouth are six barbels. The fish are equipped with a two-pointed spike under their eyes, with which they can inflict painful stings.

The Volga River basin and France are home to this species. Northern Scandinavia, Ireland, Scotland, Wales, and much of temperate Europe are excluded. They are also absent from the Alps region. Spined loaches are thought to have been restricted to the eastern rivers of England – Trent, Welland, Witham, Nene, and Great Ouse – where they flow eastward.

Cobitis actually refers to a number of distinct subspecies, including populations in southwestern Europe. In the subgenus Cobitis, the spined loach shares close relatives with Cladocera elongatoides, C. fahirae, C. tanaitica or C. pardarensis, which can be found in northern Greece, much of Romania, and western Turkey.

18. Marbled Headstander

Marbled Headstander

Scientific Name – Abramites hypselonotus

Marbled Headstanders inhabit many different habitat types throughout South America, including the Amazon River basin, the Orinoco River basin, Paraguay River basin, and the lower Paraná River basin.

These fish are often found in quiet tributaries and densely vegetated backwaters of rivers as well as in the major river channels. It is also common to see them entering areas that have experienced temporary flooding during the rainy season.

Juvenile fish take refuge in weedy margins, while adult fish tend to consume crustaceans, insects, and worms. This species of fish requires a large aquarium and mature biological system. A large surface area should be left open along the front of the tank, with a good level of shelter provided by driftwood pieces and a dense, robust planting (Anubias, Microsoriums) tied to the decor.

Floating plants cover should diffuse bright lighting, while dark backgrounds and substrates will enhance the beautiful markings on these fish. It is important to keep marbled Headstanders in groups of eight or more because they are gregarious animals.

It is especially important to keep a good-sized school of these fish since, as they mature, they become increasingly independent and sometimes aggressive toward their own kind. In larger groups, no single fish is subjected to constant aggravation.

Still, these species have a general peace with one another. Besides characins, you could have catfish, cichlids, barbs, loaches, or rainbowfish as tankmates. Don’t take any docile or small species with long trailing fins, which could prove too tempting.

 There are currently over 156 described species within 14 genera in the family Anostomidae (headstanders), which also includes Marbled Headstanders. The common family name of headstander came from the fact that most species in this family swim at an oblique or head down angle.

Abrahamites species have a much deeper body than other anostomids and have a distinct post-pelvic median keel (a characteristic unique to the genus). A. abramites eques is the only other member of the genus known from the Rio Magdalena drainage in Colombia.

Various distinguishing characteristics distinguish the two species: the presence of 10-12 branched anal fin rays in A. A. A.hypselonotus (vs. 13-14 in A.eques).

presence of 8 transverse body bars in A. hypselonotus in comparison to the 5 in A.eques, the anterior-most of which is under the dorsal fin. The color and pattern of Marbled Headstanders may vary depending on the collection location within its vast natural range. High Backed Headstanders are also available.

19. Marbled Lamprologus

Marbled Lamprologus

Scientific Name – Lepidiolamprologus attenuatus

Cichlid Lepidiolamprologus attenuatus prefers sandy substrates and digs crater-shaped nests in areas with sandy substrates in Lake Tanganyika. Preying on fishes, it is a carnivore. A 15 centimetre (5.9 in) TL specimen of this species is possible. An aquarium trade specimen is also available.

Lepidiolamprologus species are the largest representatives of Lamprologus relationship in Lake Tanganyika with a final length of about 15 cm. Small fish are the principal diet of these predatory animals. In contrast with many predators, these fish are surprisingly peaceful toward non-food-dependent fish.

Lepidiolamprologus attenuatus inhabits sandy bottomed areas in the lake, where it spawns in crater-like structures. The species does not actually spawn in sand, but on the small stones or shells that form in the crater because of the adhesive spawning habits shared by all Lamprologus relatives.

Mother and father take turns guarding their young. During breeding time, the animals in the pictures brighten up with black pelvic fins. The photos were taken while the animals were in breeding mood.

By the way, L. intenuatus is sometimes mistaken for Neolamprologus meeli, a snail cichlid with a similar caudal fin pattern. Both species have different head shapes.

However, as we took photos, we discovered a N. melee had accidentally snuck in with them, since the two species resemble each other in fright colorations and the N. melee had apparently jumped in from another tank in the neighboring aquarium. Ad Konings suggests that Nemeeli meeli belongs in the genus Lepidiolamprologus.

20. Marbled Livingston’s Hap

Marbled Livingston's Hap

Scientific Name – Nimbochromis livingstonii

Nimbochromis livingstonii is a mouth breeding cichlid indigenous to Lake Malawi, the largest lake in the African Rift Valley. Lake Malombe and the Shire River also contain this species. It is found near the shoreline on the sandy substrates of the lake.

It has a large mouth and is laterally compressed. There are reports that males reach a maximum length of 25 centimeters (9.8 inches) TL, whereas females reach a maximum length of 20 centimeters (7.9 inches).

The coloration is variable but typically brown and white. It is also possible for the dorsal fin to have blue coloration and still have an orange to red band and a white line attached to it. When the weather changes, adult males will frequently change color from spotted camouflage to brilliant blues and greens, or even develop a pale golden tone.

The blotched pattern on the breeding males is almost completely obscured by the dark blue that they turn when they breed. They usually have orange or red anal fins. The females have similar physical characteristics but lack the yellow “egg spots” on their anal fins. Their juvenile bodies are spotted with brown and white spots.

There is a theory that the species’ distinctive coloration mimics that of a dead fish, and that this may be how they hunt.

21. Marbled Sleeper Goby

Marbled Sleeper Goby

Scientific Name – Oxyeleotris marmorata

It is native to inland and coastal waters in Cambodia, Thailand, Malaysia, Singapore, Indochina, the Philippines, Indonesia, and India in the family Butidae. It is also found in fresh and brackish waters of the Mekong and Chao Praya basins. One measure of its size is 65 centimeters (26 in), though most are not larger than 30 cm (12 in).

Local commercial fisheries and farms are interested in this species of fish, making it an economically important species. This species is also available in aquariums. China’s Chinese community is very fond of the fruit’s fine texture and tasty white flesh, which is said to have healing properties.

People eat it after childbirth and surgery. This fish isn’t widely commercialized in Malaysia. Since wild populations are largely responsible for demand, prices are high. Thai folk tales have cited this species as well in pla bu thong tales, and they’ve been depicted in television series and films several times. They’re like Cinderella in content.

22. Marbled Swamp Eel

Marbled Swamp Eel

Scientific Name – Synbranchus marmoratus

Known as the marmorated swamp eel, the neotropical swamp eel, the marmorated swamp eel, the mottled swamp eel, zange, or muçum, the marbled swamp eel is indigenous to Central and South America, including Trinidad.

Marmorated swamp eels have a cylindrical body with an elongated tip and can grow up to 150 cm (60 in) in length. However, a more normal adult length is 50 cm (20 in). The pectoral and pelvic fins are both absent, as well as the dorsal and anal fins. During respiration, the eel uses its mouth lining to exchange gases with surrounding tissues.

Marbled swamp eels can breathe in water using their fully functional gills, while they can breathe on land by using their mouth and pharynx linings.

Frogs, fish, spiders, and insects form its food sources. Since it is nocturnal, it feeds on any small prey in its environment. The animal allows itself to be seen through dense vegetation on the banks of rivers, looks for prey in shallow waters, and digs burrows to locate animals that are hidden.

It lives on land in burrows and tunnels deeper when the ground gets drier so it can remain below the water table. This eel has lived for over six months in a drying-out tunnel, moving about.

Marbled swamp eels are some of the few fish found in rivers adjacent to large waterfalls and they are major predators of tadpoles in places that other fish cannot reach. It is a sequential hermaphrodite, which is helpful when colonizing new areas or coping with harsh environments.

Male or female juvenile fish are classified as primary males or females, respectively. A female fish becomes a secondary male once she reaches a length of 45-60 cm (18-24 inches). By looking at their gonads, you can tell whether a male is secondary or primary. They dig their burrows and guard their nests.

23. Marigold Swordtail

Xiphophorus helleri

Scientific Name – Xiphophorus helleri

Marigold Swordtails are a morph of Swordtails with an exquisite color pattern. One of the most attractive forms of the Xiphophorus helleri is this stunning Orange/Red variation! In the male, the fins are short and sleek, and the tail is extended like a sword, like on a saber.

Despite the absence of a sword-like tail on the female (see 2nd picture), her various colors are equally breathtaking.  Marigold Swordtails are omnivorous, and they eat freeze-dried bloodworms, tubifex, brine shrimp, and algae as well as commercially prepared food.

Mixtures of 3 to 4″ will grow at a temperature of 64-82 degrees, a pH of 7-8.3, a KH of 12-30, and a temperature of 64-82 degrees.

24. Marlier’s Julie

Julidochromis marlieri

Scientific Name – Julidochromis marlieri

This smart-looking cichlid can be found in two regions of Lake Tanganyika, in Africa: the northern and southern areas. The fish swims in an unusual manner. In the aquarium, it tends to stay within the rocks, with food darting out to be retrieved.

In spite of this, it moves purposefully upward, downward, and around. Often, it will hang upside down under rocks or even turn sideways between rocks. The colors of this cichlid are nicely contrasted.

White spots are arranged in horizontal rows to create a checkered-like design. The body is also beautifully highlighted in blue. The Marlier’s Julie comes in a variety of slightly different color patterns, all of which are very beautiful.

A close relative of it, the Masked Julie Julidochromis transcriptus, has a very similar color pattern. Marlier’s Julie, however, has three or more rows of white spots, while the Masked Julie has two rows of white spots.

25. Marilyn’s Pencilfish

Nannostomus marylinae

Scientific Name – Nannostomus marylinae

A freshwater species of characin fish belonging to the family Lebiasinidae, Nanostomus marilynae is commonly known as Marilyn’s or green stripe pencilfish. It is a small species with green stripes. Brazilian, Venezuelan, and Colombian populations have been recorded from the Rio Negro and Rio Orinoco regions.

It measures 8 x 6 x 6 inches and is used for spawning most pencil fishes. Every ‘stock’ tank is filled with water (GH 5 degree, pH 7). The Vescularai dubyana plant is a suitable breeding ground for fetuses and as a nesting place for females.

Flock breeding is not normally my preferred method of breeding fish of this genus. Since I am not interested in producing large quantities of fry, I prefer a traditional one male, one female approach.

26. Meridionalis Gray Bichir

Meridionalis Gray Bichir

Scientific Name – Polypterus senegalus meridionalis

“Senegal bichir”, “gray bichir” or “Cuvier’s bichir” are all names used to describe Polypterus senegalus, also known as the Senegal bichir, gray bichir, or dragonfish. This creature, which looks like a lungfish but is actually a fish, is a popular pet due to its primitive nature and rather prehistoric appearance, unlike most other modern species.

Most of its characteristics are carried across the genus Polypterus, making it a prototypical species. Hobbyists are fond of keeping Polypterus in captivity. Africa is the native habitat of the most widespread species of this genus.

When it rains in nature, Polypterus senegalus breed. Males chase and nudge females during courtship. Women lay 100-300 eggs by the end of the season. By cupping her caudal and anal fins around her genitals, the male receives the eggs from the female. After fertilization, the male scatters the fertilized eggs amongst the vegetation. It can take up to four days for the eggs to hatch.

27. Mexican Sailfin Molly

Mexican Sailfin Molly

Scientific Name – Poecilia velifera

Aquaria hobbyists have loved Mollie fish for decades. Among the many good qualities of the Mollies, the Common, the Sailfin, and the Mexican Sailfin have made them some of the most popular fish available for over a century. They have a pleasant temperament and are undemanding, brightly colored fish. Is there anything better?

Mollie fish are exclusively American species, and they are found predominantly in Central America and the South. Three types of fish in this genus have been kept by aquarists for decades despite many species living in the wild.

The Mexican Sailfin Molly Poecilia velifera is also known as the Giant Sailfin or Yucatan Molly, and the Common or Short-finned Molly Poecilia sphenops is the Sailfin or Topsail Molly.

Mollies are fish with elongated bodies and laterally compressed bodies. Dorsal fins with small and large sizes differentiate between basic types of fish.

Among the members of the Poeciliidae family of live-bearing tooth carps, they are members of the same family as Platies, Guppies, and Swordfish, which also have teeth in their upper and lower jaws. Male fish have a larger female counterpart than females, and the copulatory organ (gonopodium) on the middle rays of the anal fin becomes narrower as it matures.

28. Mexican Swordtail

Mexican Swordtail

Scientific Name – Xiphophorus nezahualcoyotl

(Mexican Swordtail) A bony fish of the livebearer family, Xiphophorus nezahualcoyotl is a species of swordtail. Native to freshwater, they are now becoming extinct. They reach a maximum size of 6.5 cm. Sexual reproduction is possible.

There are several livebearing poeciliids found in rivers and creeks in the state of San Luis Potosi, Mexico, including Xiphophorus nezahualcoyotl. As this species occurs at higher elevations, it is called the “Northern Mountain Swordtail,” but in the hobby, it is called the “Nezzie Sword,” probably because the species name is hard to pronounce!

Platies and swordtails belong to the genus Xiphophorus. Male Xiphophorus nezahualcoyotl are active fish that are interesting to watch. Despite being one of the smaller swordfish, nezzies certainly have a sense of humor and will occasionally chase other fish.

Its color is not spectacular, but it is attractive. On the flanks there are six or seven vertical bars, and the scales are edged in black. If the fish is in a good mood, its bars sometimes fade. On the male, the dorsal is prominently greenish, and the sword is yellow-orange with a black edge. Females lack vertical bars and are drab in comparison.

29. Mexican Tetra

Mexican Tetra

Scientific Name – Astyanax fasciatus mexicanus

In addition to its other names, the Mexican tetra (Astyanax mexicanus), is a freshwater fish of the Characiformes family. As the type species of its genus, it is a member of the Nearctic realm, found along the Rio Grande in Texas, the Nueces and Pecos Rivers in Mexico, and the central and eastern regions of the country.

The Mexican tetra grows up to 12 cm (4.7 inches) in length, with an unremarkable, dull coloration. Its blind cave form, though, stands out for having no eyes or pigment and having a pinkish-white color to its body (resembling an albino).

The blind variety of this fish is fairly popular among aquarists. Mexicanus is a peaceful species that prefers mid level water above the rocky and sandy bottoms of lakes, ponds, creeks, and rivers where it thrives in its native habitat.

It prefers a pH range of 6.5–8, a hardness range from 30 to 40 dGH, and a temperature range of 20 to 25 °C (68 to 77 °F) because it lives in a subtropical climate. There is a migration to warmer waters during the winter. A crustacean, insect, and annelid diet is its natural diet, but in captivity it is omnivorous.

There has been some contention that the Mexican tetra is a subspecies of A. flasciatus, but this theory lacks wide acceptance. Furthermore, the blind cave form is sometimes regarded as a separate species, A. jordani, yet phylogenetic evidence directly contradicts this.

30. Mickey Mouse Platy

Mickey Mouse Platy

Scientific Name – Xiphophorus maculatus

Orange with black stripes is these fish. Males can only reach a maximum width of 2 inches, while females reach a maximum width of 3 inches. pH 7.0 to 8.2 and water temperatures ranging from 70° – 77°F are recommended for keeping these fish in captivity.

The tank should have dense planting and areas where people can swim and plants float. In addition to being peaceful, they should be kept in groups in which there are more females than males. They can be kept in community aquariums with equally peaceful fish. For a group of five, a minimum tank size of 10 gallons is recommended.

It is an omnivore. This animal can be fed dried foods and live food supplemented with vegetable matter in captivity.

31. Midas Cichlid

Midas Cichlid

Scientific Name – Amphilophus citrinellus

Amphilophus citrinellus is a large cichlid fish that lives in Costa Rica and Nicaragua near the San Juan River. Among aquarium trades, A. citrinellus is also known as Midas cichlid in the aquarium trade.

A. Citrinellus is an omnivore whose diet contains plant material, mollusks and smaller fish. Amphilophus labiatus, which shares the nickname red devil cichlid with this species, is not to be confused with the species.

This fish has an anal and dorsal fin that is pointed and has a thick body. This large Central American cichlid grows to a length between 10 and 14 inches (25 to 35 cm) and develops a nuchal hump on its head as it matures, though the males’ will be considerably larger and the females’ will only develop a slight hint of it. They have a life span of 10 to 12 years if well cared for.

Their wild coloring is dark brown to dark gray with a large black spot on one side and six dark bars on the body. The yellow variety also occurs naturally. Interestingly, wild Midas Cichlids can lose their natural barred pattern when they are placed in an aquarium and tend to become more solidly colored.

Breeding captive bred animals can produce a wide range of color morphs and are quite intriguing. You can choose to have piebald, white and orange, orange and yellow, or white and yellow color morphs.

Yellow to orange colored fish with blotches are the most prevalent color morph. Also, there is a strain of Midas that was recently introduced that retains the original bars of a wild caught specimen. This strain is known as a “Redhead Barred Midas”.

In addition to their regular teeth, cichlids, wrasses, and parrotfish share a unique set of pharyngeal teeth. The anal, dorsal, pectoral, and pelvic fins of cichlids have spiny rays, which are useful in deterring predators. Its soft front makes it ideal for precise movements in the water and effortless positions in comparison to fins designed for fast swimming.

While other fish have two sets of nostrils, cichlids have only one. In order to smell water, cichlids suck water into their mouths and expel it right back out after a few seconds or minutes, depending on how much they need to “smell” the water. Saltwater damselflies and cichlids share this characteristic, and they are thought to be closely related.

32. Millions Fish

Millions Fish

Scientific Name – Poecilia reticulata

This species of tropical fish, also known as the dusky millions or the one-spot livebearer (Phalloceros caudimaculatus), originates from Brazil, northern Argentina and Uruguay. As well as Australia, Malawi, and New Zealand, it has been introduced for mosquito control, in addition to being escaped from aquariums.

In places where it has been introduced, it has been shown to have adverse ecological effects. A female of this species grows to a height of 6 centimeters (2.4 inches), whereas a male remains smaller.

7-9 soft rays on the dorsal surface. Small pectoral fin in comparison with dorsal fin, not reaching back to the level of dorsal fin. Black patches on the body and fins; tip of gonopodium; pelvic fin bases has a noticeable downturned hook.

The fish has a slight arch in their back and a deep belly in front of their anal fin. The mouth is small and upturned, and the tail is rounded. Males possess a modified anal fin called a gonopodium.

Females are fertilized internally with this method. There can be a variety of color patterns; however, the most common one is grey-olive with dark coloured scale margins forming a hatching pattern. The sides and fins are covered with jet black blotches and speckles.

33. Molly

Molly Fish

Scientific Name – Poecilia latipinna

Aquarium hobbyists keep many Molly fish in their tanks. Fish that are widely available and affordable are community-friendly and beginner-friendly.

Colors and fin types vary a lot among them. Adaptable and hardy, they are easy to maintain. According to popular belief, this species of fish is primarily a freshwater species, swimming back to their freshwater habitat after spending a short time in brackish water.

However, fish of the same species have been observed living and reproducing in coastal sea waters, brackish swamps, and freshwater streams. Despite years of inbreeding in tank-bred specimens, Mollies are hardy and highly adaptable species.

Platys, swordtails and guppies, which are livebearers, are similar in appearance to mollies, though these fish tend to be bigger and more energetic. In contrast to pilates, which appear to be more docile, mollies exhibit greater individuality and aggressiveness.

34. Mono

Mono Fish

Scientific Name – Monodactylus argenteus

Its scientific name is Monodactylus argenteus, which is also known as Mono argentus. Mono argentus is widely distributed. Across Southeast Asia, the Australian coast, and Eastern Africa, they’re found. Red Sea is their primary habitat.

Inshore reefs, freshwater tidal pools, and estuaries are the most common places to find these fish. It is a perfect addition to an aquarium if you are an experienced aquarist. The fish school together. The fish should always be kept in groups.

This is a species of Monodactylus argenteus, which belongs to the moonyfish family Monodactylidae. Silver moony fish, butter bream, or diamond fish are some of the common names of this fish. There are species native to the western Pacific Ocean, the Indian Ocean, the Persian Gulf, Red Sea, and their associated estuaries, including the Mekong Delta.

About 27 centimeters is the maximum length of this species. The fins are yellowish in color and the body is shiny silver. Both anal and dorsal fin tips are black. Juveniles are yellow-colored with two black stripes vertically on each side.

Swimming above corals in Madagascar is a school of silver moony fish. ‘This species can be found in many types of habitats, from the open ocean to brackish water to freshwater rivers. The species is found around piers in harbors and estuaries in Australia.

As a model organism in the study of salinity tolerance, it can survive in a wide range of salinities. It is easier for juveniles to maintain homeostasis in variable environments like estuaries, as they are more tolerant of salt changes.

Silver mooney’s display territorial behavior, however, they are easily reared in captivity and can be kept in saltwater aquariums. Solitary or in groups, they may reside in saltwater aquariums. Detritivorous and planktivorous, it feeds on plankton. This fish is the source of the myxozoan parasite Kudoa monodactyly.

35. Montezuma Swordtail

Montezuma Swordtail

Scientific Name – Xiphophorus montezumae

As its name suggests, the Montezuma swordtail is a livebearing freshwater fish in the family Poeciliidae, order Cyprinodontiformes, genus Xiphophorus. The common platy and swordtail are members of the same genus. “Xiphophorus” is the Greek word for swordtail.

Males grow to a maximum length of about 7.5 cm (3.0 in), whereas females grow to a maximum length of around 3 inches. Freshwater aquariums commonly house Xiphophorus. In contrast to most species, which have angled swords, the males of this species have metallic green scales.

Temperatures around 21–25 °C (70–77 °F) are ideal for Montezuma swordtails. The pH of the water needs to be around 7.5 at all times. It is native to the Pánuco River basin in the states of Tamaulipas, San Luis Potosi, and Veracruz in northeastern Mexico.

Fishes such as these are quite resilient. Rivers that flow rapidly are ideal habitats for them. Females outnumber males in herds in the wild, and she enjoys giving birth among dense aquatic foliage. Aquatic plants and live foods are preferred over artificial plants and tropical fish foods by these fish which reproduce quickly.

Approximately 50 fry are born to females every seven weeks on average. Almost all swordtails breed readily with platies, including the Montezuma swordtail.

36. Moon fish “Red Wag”

Xiphophorus maculatus

Scientific Name – Xiphophorus maculatus

maniculatus is a small, laterally-compressed fish with a deep body that reaches a maximum depth of half its standard length. Like many poeciliid species, X. maculatus is sexually dimorphic and males and females may reach 40 mm and 60 mm respectively, though are usually marginally smaller (average approximately 30-40 mm).

The color of the plant is highly variable because of the variable number and type of natural habitats, as well as the prevalence of Xiphophorus species. This can lead to hybridization. A wild population of fish is a paler shade of olive gray with or without melanic/speckled patches than ornamental varieties.

Nevertheless, ornamental fish bred for captive consumption typically display vivid coloration, such as orange, red, brown, yellow, and black. They lack central stripes.

A modified gonopodium used by males to inseminate females is called gonopodium. It is not possible to see the gonopodium at the caudal fin base and the third ray hooks strongly. The rays of the dorsal fin range from 7 to 11 (usually 8-10); the lateral scales range from 22 to 25 (usually 23-24); and the vertebrae range from 26 to 28 (usually 27-28).

maculatus is omnivorous and has been found to consume plant material, aquatic and terrestrial insects, and crustaceans (acids and caridean shrimps) that were introduced in Queensland (Arthington, 1989). The diet of chironomid larvae and cyclopoid copepods in an Indonesian lake was dominated by detritus (Green et al., 1978).

37. Moonlight Gourami

Moonlight Gourami

Scientific Name – Trichopodus microlepis

This peaceful labyrinth fish is often referred to as moonlight gourami. The body of this creature is silvery-white with a soft greenish hue similar to moonlight. In addition to being able to breathe air directly, Trichogaster microlepis also has a special organ that allows it to dwell within labyrinths.

Since the labyrinth organ has a tendency to go to the surface to swallow air, it is common to see it do so. They can survive in situations with very low oxygen levels due to their ability to breathe air. Fish like this can even survive for several hours outside of water if they remain moist.

Moonlight gourami is distinguished from other gourami species by the concave slope of its head. Moonlight gouramis grow up to 13 centimeters (5.1 in) in length as adults.

Their silvery colors are highlighted by a slight greenish hue reminiscent of moonlight. Moonlight gouramis are distinguished from other varieties by their concavely sloped heads. In males, the pelvic fins are orange to red in color and the dorsal fins are long and pointy.

A female’s pelvic fin is yellow to colorless, and her dorsal fin is shorter and rounder. The orange threadlike ventral fins become red in males during spawning.

38. Mosaic Gouramii

Mosaic Gouramii

Scientific Name – Trichogaster leer

Pearl gouramis are one of the most beautiful and easiest to keep gouramis, as well as one of the hardest to keep. The fish breathes through gulping air at the surface of its tank, which is what makes it a labyrinth fish. Pearl gouramis can actually vocalize, like some other labyrinth fish, so don’t be surprised if you hear them croaking or growling when they are fighting or mating.

A fish of this size reaches a TL of about 12 centimeters (4.7 in). Brownish-silver body with a pearly pattern; black line running from the head to the caudal fin and gradually thinning as it approaches. There are many names for this fish based on its appearance, including lace gourami and mosaic gourami.

A characteristic of many gourami species, the males of these fish are generally larger and more colorful than the females. Their throat regions show a bright orange coloration, which becomes even brighter during breeding season when they court a female.

As well as females, males’ fins have a slight orange tint, except for their caudal (tail) fins. There is also more point to the male’s dorsal fin, as well as extended anal fin rays.

39. Motoro Stingray

Motoro Stingray

Scientific Name – Potamotrygon motoro

A famous and popular freshwater ray is the motoro stingray (Potamotrygon motoro). It is worthwhile to note, however, that despite the popularity of motoro stingrays in aquariums, they are not yet classified quite precisely. Some new types are found from time to time that was not known before.

Unlike ordinary fishes, rays have a skeleton that doesn’t have bones and is made entirely of cartilaginous tissue, which differentiates them from sharks and sawfishes. An ocellate river stingray is scientifically known as an ocellate stingray, meaning it is capable of stinging.

Rays actually have poisonous spines on their tails (they were once scales). They use these spines as protection. A gland near the bottom of the spine produces the poison. A ray cannot attack humans with its spine, contrary to popular belief. For the fish to sting you, you need to step on one of them or disturb them somehow.

Whenever a Mortoro stingray is lost (every 6-12 months), its spine can be found at the bottom of the tank. This is nothing to worry about. The ampullae of Lorenzini are another characteristic of freshwater rays. Fish have special tubes or channels on their heads (around their eyes and nostrils).

They help cartilaginous fish navigate based on the terrestrial magnetic field by sensing electric fields. Singing rays can grow to a diameter of 50 cm and a length of 1 m in the wild. Their weight can reach 35 kg. It is, of course, impossible for the fish to become that large when kept in a tank.

Almost round disks form the shape of the ray. Above the fish’s back are its eyes. It usually appears as a brown or beige color with numerous marigold yellow spots. Rays have a white abdomen. Spots can differ significantly in color and location between fish. Several color types of stingrays have been defined in the Amazon river basin, but each type includes several subtypes.

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