Fishes
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Marble Molly
Poeciliidae
Poecilia sphenops
In English-speaking countries, the trade name “Marble Molly” or “Molly Marble” refers not to a specific breed of fish, but to a particular color variation. This pattern can be found in several selective forms, such as…
Marbled Catfish
Doradidae (Thorny Catfishes)
Amblydoras nauticus
The marbled talking catfish, known scientifically as Amblydoras nauticus, is a member of the family Doradidae, or thorny catfishes. This species is attractive due to its unpretentiousness and ease of keeping. It…
Marbled Clarias
Clariidae (Clariidae)
Clarias batrachus
The marbled African sharptooth catfish, also known as the spotted or Angolan walking catfish, bears the scientific name Clarias angolensis and belongs to the family Clariidae. Its name originates from the Latin word…
Marbled Hatchetfish
Freshwater Hatchetfish (Gasteropelecidae)
Carnegiella strigata
The scientific name Carnegiella strigata belongs to the family Gasteropelecidae, whose name translates to "axe-shaped belly." This name is reflected in the appearance of the marbled hatchetfish or Carnegiella. As an…
Marbled Headstander
Anostomidae
Abramites hypselonotus
Abramites hypselonotus, known as the Marbled Headstander, is a member of the Anostomidae family. This fish is quite rare in home aquariums, partly due to difficulties in breeding and its peculiar "character". Most…
Marbled Synodontis
Mochokidae
Synodontis schoutedeni
The Marbled Synodontis, or Synodontis schoutedeni, also known as Schouteden's Synodontis, belongs to the family Mochokidae. This catfish is popular due to its peaceful nature and unusual body pattern, as well as being…
Marbled Whiptail
Armored Catfishes (Loricariidae)
Loricaria simillima
The Marbled Whiptail, also known as Loricaria simillima (scientific name Loricaria simillima), is a member of the family Loricariidae, or Armored Catfishes. The native habitat of this fish is South America, where it is…
Marlier's Julidochromis
Cichlids (Cichlidae)
Julidochromis marlieri
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
Osphronemidae
Betta raja
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
Armored Catfish (Callichthyidae)
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
Cichlids (Cichlidae)
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
Armored Catfish (Callichthyidae)
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
Cichlids (Cichlidae)
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
Cichlids (Cichlidae)
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
Rainbowfishes (Melanotaeniidae)
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
Rainbowfishes (Melanotaeniidae)
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
Rainbowfishes (Melanotaeniidae)
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
Armored Catfish (Callichthyidae)
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
Cyprinids (Cyprinidae)
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
Cichlids (Cichlidae)
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
Armored Catfish (Callichthyidae)
Corydoras metae
Corydoras metae, known among aquarists as Meta Corydoras, Bandit Cory, or “Black Mask” Catfish, is a member of the Callichthyidae family. This species is found exclusively in the Meta River basin, a left tributary of…
Mickey Mouse Platy
Poeciliidae
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
Cyprinids (Cyprinidae)
Microdevario kubotai
Microdevario kubotai, officially known as Microdevario kubotai, belongs to the family Cyprinidae. Its name honors the Thai biologist Katsuma Kubota. In the aquarium hobby, it is also known as Green Neon Rasbora or…
Microrasbora rubescens
Cyprinids (Cyprinidae)
Microrasbora rubescens
Microrasbora rubescens, also known as the Red Dwarf Rasbora, with the scientific name Microrasbora rubescens, belongs to the family Cyprinidae. Despite its common name, this fish is not actually a Rasbora. The…
Midas Cichlid
Cichlids (Cichlidae)
Amphilophus citrinellus
The Midas Cichlid, or Citron Cichlid, scientifically known as Amphilophus citrinellus, belongs to the Cichlidae family. Its name alludes to the myth of King Midas and his boundless greed. Observing the behavior of this…
Midnight Catfish
Driftwood Catfishes (Auchenipteridae)
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
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
Moema piriana
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
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
Acestrorhamphidae
Hemigrammus collettii
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
Cichlids (Cichlidae)
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
Poeciliidae
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
Poeciliidae
Xiphophorus montezumae
The Montezuma Swordtail, known scientifically as Xiphophorus montezumae, is a member of the Poeciliidae family. This fish was first described in 1899 when scientists Jordan and Snyder discovered it in the Moctezuma…
Moon Myloplus
Piranhas (Serrasalmidae)
Myloplus rubripinnis
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
Osphronemidae
Trichopodus microlepis
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
Armored Catfish (Callichthyidae)
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
Poeciliidae
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
Poeciliidae
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
Oxudercidae
Periophthalmus barbarus
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
Rainbowfishes (Melanotaeniidae)
Melanotaenia fluviatilis
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…
Myers' Killifish
Rivulidae
Xenurolebias myersi
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
River Loaches (Balitoridae)
Pseudogastromyzon myersi
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
Cobitidae (Loaches)
Pangio myersi
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
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)
Mylossoma duriventre
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
Mystus tengara, known by its scientific name, belongs to the Bagridae family (Bagrid Catfishes). This catfish originates from South Asia and can be found in the river systems of Pakistan, India, Nepal, and Bangladesh.
Nan River Gastromyzon
River Loaches (Balitoridae)
Hemimyzon nanensis
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
Cyprinids (Cyprinidae)
Carassius auratus
This interesting variety of goldfish came into being between 1748 and 1750, having been bred in the Japanese Izumo region, now known as Shimane Prefecture. Curiously, despite its Japanese origin, the fish's name has…
Nannaethiops unitaeniatus
Distichodontidae
Nannaethiops unitaeniatus
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
Lebiasinidae
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
Lebiasinidae
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
Lebiasinidae
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
Lebiasinidae
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
Lebiasinidae
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
Cichlids (Cichlidae)
Nanochromis parilus
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
Armored Catfishes (Loricariidae)
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
Needlefish (Belonidae)
Xenentodon cancila
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
Cichlids (Cichlidae)
Neolamprologus multifasciatus
A member of the Cichlidae family, Neolamprologus multifasciatus, also known by its scientific name Neolamprologus multifasciatus, is a miniature fish with remarkable behavior. It is territorial: individuals actively…
Neon Dwarf Gourami
Osphronemidae
Trichogaster lalius
Trichogaster lalius, also known as the Neon Dwarf Gourami, is a member of the Osphronemidae family. This variety of Dwarf Gourami is widespread and highly popular, standing out among others due to the intensity of its…
Neon Guppy
Poeciliidae
Poecilia reticulata
The Neon Guppy, or Neon Guppies (Poecilia reticulata, Neon variety), belongs to the family Poeciliidae. This scientific name is familiar to specialists, and in English-speaking countries, these fish are often found…