Fishes

Julidochromis marlieri, known in the aquarium hobby as Marlier's Julidochromis, belongs to the Cichlidae family. These vibrant and active fish exhibit unique features of intraspecific interaction. As they develop, they…

Masked Betta

Betta raja

Osphronemidae

The Masked Betta, also known as Betta raja, belongs to the family Osphronemidae. Although this species is part of the fighting fish group, it is characterized by a peaceful and calm disposition, showing no aggression.…

Masked Corydoras

Corydoras atropersonatus

The Masked Corydoras, known scientifically as Corydoras atropersonatus, belongs to the family Callichthyidae, which includes armored or callichthyid catfishes. Its name refers to the dark mark on its head. This fish…

Masked Julie

Julidochromis transcriptus

The Masked Julie, also known by its scientific name Julidochromis transcriptus, belongs to the Cichlidae family. These agile fish always attract attention with their activity. They are not difficult to keep and breed,…

Megalechis picta

Megalechis picta is a representative of the Callichthyidae family, known for its unpretentiousness and hardiness. It can forgive some mistakes made by beginner aquarists, making it an excellent choice for a novice's…

Melanochromis chipokae

Melanochromis chipokae, known scientifically as Melanochromis chipokae, belongs to the family Cichlidae. This species represents the Mbuna group of cichlids, characterized by their aggressive behavior. This particular…

Melanochromis johannii

Pseudotropheus johannii

Melanochromis johannii, known in the scientific world as Pseudotropheus johannii (or Melanochromis johannii), belongs to the family Cichlidae. This cichlid is distinguished by its particular beauty and vibrancy.…

Melanotaenia australis

Melanotaenia australis, also known as the Western Rainbowfish, belongs to the family Melanotaeniidae. This fish is an excellent choice for beginner aquarists due to its unpretentiousness, ease of care and breeding, and…

Melanotaenia papuae

Melanotaenia papuae, known by its scientific name Melanotaenia papuae, belongs to the family Melanotaeniidae (Rainbowfishes). The native habitats of this fish are numerous streams on the southern tip of the island of…

Melanotaenia parva

The scientific name Melanotaenia parva belongs to the family Melanotaeniidae, commonly known as Rainbowfishes. This fish is also known as the Kurumoi Lake Rainbowfish, named after Lake Kurumoi on the Cenderawasih…

Melini's Corydoras

Corydoras melini

Melini's Corydoras, scientifically known as Corydoras melini, belongs to the family Callichthyidae, which includes armored or callichthyid catfishes. The name of this fish commemorates the Swedish biologist Douglas…

Melon Barb

Haludaria fasciata

Haludaria fasciata, known as the striped barb, is a member of the carp family (Cyprinidae). The fish received its scientific name in honor of the Bengali artist Haludar, who created illustrations in 1797 for Francis…

Mesonauta insignis

Mesonauta insignis, scientifically known as Mesonauta insignis, belongs to the family Cichlidae. Its natural habitat is located in South America, specifically in the basins of the Rio Negro and Orinoco rivers, extending…

Meta Corydoras

Corydoras metae

Corydoras metae is known to aquarists as the meta corydoras, bandit cory, or black-mask catfish, and belongs to the family Callichthyidae. This species lives exclusively in the Río Meta basin, a left tributary of the…

Mickey Mouse Platy

Xiphophorus maculatus

The Platy sold under the trade name "Mickey Mouse" (Platy Mickey Mouse) is not found in the wild. This fish is a selective breeding form of the common Platy (Xiphophorus maculatus). It received its recognizable name due…

Microdevario kubotai

Microdevario kubotai belongs to the family Cyprinidae. The species is named after the Thai biologist Katsuma Kubota. In the hobby it is also called the green neon rasbora or Kubota's rasbora. Despite these names, this…

Microrasbora rubescens

Microrasbora rubescens, also known as the red dwarf rasbora, belongs to the family Cyprinidae. Despite its common name, this fish is not actually a rasbora. Its classification was revised in 2009 following research that…

Midas Cichlid

Amphilophus citrinellus

Driftwood Catfishes (Auchenipteridae)

The Midas Cichlid, scientifically known as Amphilophus citrinellus, belongs to the family Cichlidae. The common name references the mythical King Midas and his endless greed. Watching this fish's behaviour, you will…

Midnight Catfish

Auchenipterichthys thoracatus

The Midnight Catfish (Auchenipterichthys thoracatus) belongs to the family Auchenipteridae. This species of catfish leads a secretive, predominantly nocturnal lifestyle. Distinguished by its peaceful disposition, it is…

Mimagoniates barberi

Stevardiidae

Mimagoniates barberi, scientifically known as Mimagoniates barberi, belongs to the family Stevardiidae. These fish are agile and active, and their coloration is notable for beautiful blue hues. They will be an excellent…

Moema piriana

Rivulidae

The scientific name Moema piriana belongs to a representative of the Rivuline family. This beautiful annual fish originates from South America, where it can be found in its natural habitat. The fish is widespread…

Moenkhausia agnesae

Acestrorhamphidae

Moenkhausia agnesae, known in scientific literature as Moenkhausia agnesae, belongs to the Acestrorhamphidae family. This fish is native to South America, specifically found in the upper reaches of the Amazon River. It…

Moenkhausia Colletti

Hemigrammus collettii

Acestrorhamphidae

Hemigrammus collettii, known as Moenkhausia Colletti, belongs to the extensive Acestrorhamphidae family. This species appeared in Europe in the early 2000s, becoming available to aquarists. In general, they are not…

Mojarra

Mayaheros urophthalmus

The Mexican Cichlid, also known as Mojarra or Maya Cichlid (scientific name Mayaheros urophthalmus), belongs to the family Cichlidae. In its natural habitats in the USA and Mexico, this species is a target for…

Molly sphenops

Poecilia sphenops

The Molly sphenops (Poecilia sphenops), or simply Molly, belongs to the Poeciliidae family. This fish is known for its unpretentiousness in keeping and relative ease of breeding. Additionally, it attracts attention with…

Montezuma Swordtail

Xiphophorus montezumae

The montezuma swordtail, Xiphophorus montezumae, belongs to the family Poeciliidae. It was first described in 1899 by Jordan and Snyder, who discovered it in the Moctefuma River basin during an expedition through…

Moon Myloplus

Myloplus rubripinnis

Piranhas (Serrasalmidae)

The Moon Myloplus, or Redhook Myloplus (scientific name Myloplus rubripinnis), belongs to the family Serrasalmidae, also known as the Piranha family. This is a large schooling fish that exhibits a peaceful temperament…

Moonlight Gourami

Trichopodus microlepis

Osphronemidae

Trichopodus microlepis, known as the Moonlight Gourami, belongs to the family Osphronemidae. This fish possesses unique beauty: although its coloration is not particularly vibrant, the gourami's scales can reflect even…

Mosaic Corydoras

Corydoras haraldschultzi

The scientific name Corydoras haraldschultzi indicates that the Mosaic Corydoras, or Harald Schultz's Corydoras, belongs to the family Callichthyidae. The catfish received one of its names thanks to the Brazilian fish…

Moscow Guppies

Poecilia reticulata

Moscow Guppies, or Guppy Moscow (which is a synonym), are known by the scientific name Poecilia reticulata (Moscow variety) and belong to the Poeciliidae family. Among Russian breeders, especially those of the old…

Mosquitofish

Gambusia affinis

The scientific name Gambusia affinis is given to the mosquitofish, which belongs to the family Poeciliidae. This fish is not particularly attractive in appearance and can be quite gluttonous, and does not always display…

Mudskipper

Periophthalmus barbarus

Oxudercidae

Periophthalmus barbarus, more commonly known as the mudskipper, belongs to the family Oxudercidae. It is an extraordinary fish that spends most of its life on land. Here it feeds, seeks out mates for reproduction, and…

Murray River Rainbowfish

Melanotaenia fluviatilis

Arowanas (Osteoglossidae)

The Murray River Rainbowfish, also known as the River Rainbowfish, bears the scientific name Melanotaenia fluviatilis and belongs to the family Melanotaeniidae. This fish is characterized by its unpretentiousness, ease…

Myanmar Arowana

Scleropages inscriptus

Scleropages inscriptus, the Myanmar arowana, belongs to the family Osteoglossidae. This species is known for its considerable value; individual specimens can be worth tens of thousands of dollars. It is particularly…

Myers' Killifish

Xenurolebias myersi

Rivulidae

Myers' Killifish, scientifically known as Xenurolebias myersi, belongs to the Rivulidae family. This striking striped fish was named in honour of the American ichthyologist George Sprague Myers. Its discovery and…

Myers's Hillstream Loach

Pseudogastromyzon myersi

River Loaches (Balitoridae)

Myers's Hillstream Loach (Pseudogastromyzon myersi) belongs to the family Balitoridae, also known as river loaches. This fish is considered one of the most undemanding species for keeping in an aquarium environment that…

Myers's Loach

Pangio myersi

Cobitidae (Loaches)

The fish known as Myers's Loach, or Pangio myersi by its scientific name, is a member of the Cobitidae family, which includes loaches. It was named in honor of Dr. George Sprague Myers of Stanford University, whose…

Myloplus schomburgkii

Piranhas (Serrasalmidae)

Myloplus schomburgkii, also known as the Schomburgk's Myloplus or Disk Tetra, bears the scientific name Myloplus schomburgkii and belongs to the family Serrasalmidae (Piranhas). This species is a herbivorous relative of…

Mylossoma duriventre

Piranhas (Serrasalmidae)

The fish Mylossoma duriventre, known as Mylossoma duriventre, belongs to the family Serrasalmidae, or piranhas. Its natural range covers the tropical and subtropical regions of South America, found in the Amazon,…

Mystus tengara

Bagridae (naked catfishes)

Mystus tengara is a catfish of the family Bagridae. It originates from South Asia and inhabits river systems in Pakistan, India, Nepal, and Bangladesh.

Nan River Gastromyzon

Hemimyzon nanensis

River Loaches (Balitoridae)

Hemimyzon nanensis, known as the Nan River Gastromyzon, belongs to the family Balitoridae. This fish is native to Southeast Asia, specifically Thailand, which is part of the Indochina region. It was first discovered in…

Nankin

Carassius auratus

This distinctive goldfish variety emerged between 1748 and 1750, developed in the Izumo region of Japan, now known as Shimane Prefecture. Despite its Japanese origin, the fish's name has deep Chinese roots. Many…

Nannaethiops unitaeniatus

Distichodontidae

Nannaethiops unitaeniatus, known as the One-striped Nannaethiops, belongs to the family Distichodontidae. These fish are rarely found in hobbyists' aquariums, although they have all the qualities to become truly…

Nannostomus anduzei

Nannostomus anduzei, known scientifically as Nannostomus anduzei, belongs to the family Lebiasinidae. The fish was named in honor of the Venezuelan biologist and explorer Pablo Anduze, who first provided a detailed…

Nannostomus harrisoni

Nannostomus harrisoni, also known as the Black-striped Nannostomus, belongs to the family Lebiasinidae. This species is named after James Harrison, a scientist who actively assisted in the Indiana University and…

Nannostomus marginatus

The Dwarf Pencilfish, or Nannostomus marginatus, belongs to the family Lebiasinidae. These active and undemanding fish can become a true adornment to almost any freshwater aquarium. Thanks to their simplicity, they are…

Nannostomus marilynae

Nannostomus marilynae, known by its scientific name, belongs to the family Lebiasinidae. It was named in honour of Marilyn Sohner Weitzman, the wife of the scientist who described this species. In aquaristics, these…

Nannostomus minimus

Nannostomus minimus, with the Latin name Nannostomus minimus, belongs to the family Lebiasinidae. It is quite rare among amateur aquarists. These fish are often found as incidental bycatch in shipments with other…

Nanochromis parilus

Armored Catfishes (Loricariidae)

Nanochromis parilus, also known as Nanochromis transvestitus, belongs to the Cichlidae family. This fish is not the most vibrant, unlike other cichlids, and its poor compatibility with conspecifics, as well as its need…

Narrow-headed Catfish

Pseudohemiodon laticeps

Pseudohemiodon laticeps, known as the Narrow-headed Catfish, is a member of the armored catfish family (Loricariidae). Its unusual appearance combined with its unpretentious nature makes this catfish highly desirable…

Needlefish

Xenentodon cancila

Needlefish (Belonidae)

Xenentodon cancila, known as the Freshwater Gar, Freshwater Needlefish, or "Silver Needle," is a member of the Belonidae family. A very similar species, Xenentodon canciloides, is also found under the same name, and…

Neolamprologus multifasciatus