Fishes
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Homaloptera bilineata
River Loaches (Balitoridae)
Homaloptera bilineata
Homaloptera bilineata, also known as the Two-lined Homaloptera, belongs to the family Balitoridae, or river loaches. Although this species is undemanding to keep and peaceful, its breeding in aquarium conditions…
Homaloptera confuzona
River Loaches (Balitoridae)
Homaloptera confuzona
The fish Homaloptera confuzona, known by its scientific name Homaloptera confuzona, is a member of the Balitoridae family (River loaches). Although representatives of this group are often found among aquarium…
Homaloptera Smithi
River Loaches (Balitoridae)
Homalopteroides smithi
Homalopteroides smithi, known as Smith's Homaloptera, belongs to the family Balitoridae, or river loaches. This fish was named after the ichthyologist Hugh Smith (1865–1941), who discovered many tropical fish in Siam,…
Homaloptera Stephensoni
River Loaches (Balitoridae)
Homalopteroides stephensoni
Homalopteroides stephensoni, known as Stephenson's Homaloptera, belongs to the family Balitoridae, which includes river loaches. This fish received its scientific name in honor of John Stephenson (1871–1933), a…
Homaloptera tweediei
River Loaches (Balitoridae)
Homalopteroides tweediei
Homalopteroides tweediei, or Homaloptera tweediei, belongs to the family Balitoridae, known as river loaches. This fish was named after the naturalist and archaeologist Michael Tweedie (1907–1993), Assistant Curator of…
Honey Gourami
Osphronemidae
Trichogaster chuna
Trichogaster chuna, more commonly known as the Honey Gourami, is a member of the Osphronemidae family. This small, graceful fish is characterized by its soft coloration, ranging from silvery-gray to delicate yellow.…
Hongslo's Dwarf Cichlid
Cichlids (Cichlidae)
Apistogramma hongsloi
Apistogramma hongsloi, known as Hongslo's Dwarf Cichlid, belongs to the Cichlidae family. It is a beautiful and vibrant fish, relatively easy to care for, but characterized by complex intraspecific relationships.…
Hoppe's Otocinclus
Armored Catfishes (Loricariidae)
Otocinclus hoppei
Hoppe's Otocinclus, Otocinclus hoppei — its scientific name — is a member of the armored catfish family (Loricariidae). This fish is native to South America, where it inhabits the Madeira and Ucayali river basins, part…
Horseface Loach
Cobitidae (Loaches)
Acantopsis dialuzona
Belonging to the family Cobitidae, the Horseface Loach (Acantopsis dialuzona) is a peaceful and calm aquarium fish. It can be successfully kept together with many species of tropical fish. Its keeping conditions do not…
Hoven's Carp
Cyprinids (Cyprinidae)
Leptobarbus hoevenii
The fish known as Hoven's Carp (Leptobarbus hoevenii) belongs to the family Cyprinidae. It is named after the zoologist Jan van der Hoeven (1801–1868). Due to its impressive size, this species is rarely found in amateur…
Hummingbird Cichlid
Cichlids (Cichlidae)
Labidochromis caeruleus
The Yellow Lab Cichlid, also known as the Electric Yellow Cichlid or Hummingbird Cichlid (scientific name Labidochromis caeruleus), belongs to the family Cichlidae. This cichlid, thanks to its bright coloration and…
Hummingbird Tetra
Acestrorhamphidae
Trochilocharax ornatus
The Hummingbird Tetra, scientifically known as Trochilocharax ornatus, is a member of the Acestrorhamphidae family. This species undoubtedly lives up to its name, as it is among the most miniature aquarium fish.…
Humphead Glassfish
Asian Glassfish (Ambassidae)
Parambassis pulcinella
Parambassis pulcinella, also known as the Humphead Glassfish, belongs to the family Ambassidae, or Asian Glassfish. This fish is native to Southeast Asia and is found in the river systems of Thailand and Myanmar. Its…
Hypancistrus "Yellow Tiger"
Armored Catfishes (Loricariidae)
Hypancistrus sp. L333
Hypancistrus sp. L 333, known as Hypancistrus "Yellow Tiger", belongs to the armored catfish family (Loricariidae). This catfish is native to the South American continent. Its natural habitat is the Xingu River basin, a…
Hypancistrus inspector
Armored Catfishes (Loricariidae)
Hypancistrus inspector
Hypancistrus inspector, known scientifically as Hypancistrus inspector, belongs to the armored catfish family (Loricariidae). Its name comes from the Latin word "Inspectores," which translates to "observer," and this is…
Hypancistrus Monte Dourado
Armored Catfishes (Loricariidae)
Hypancistrus sp. L411
Hypancistrus Monte Dourado, known scientifically as Hypancistrus sp. L 411, belongs to the family Loricariidae. This catfish originates from South America. Its primary habitat is the Jari River basin, which is one of…
Hyphessobrycon elachys
Acestrorhamphidae
Hyphessobrycon elachys
Hyphessobrycon elachys, known by its scientific name, belongs to the Acestrorhamphidae family. This fish is native to South America, where it can be found in the Paraguay River basin. This river flows through the…
Hypsibarbus
Cyprinids (Cyprinidae)
Hypsibarbus wetmorei
Hypsibarbus, or Lemonfin Barb (scientific name Hypsibarbus wetmorei), belongs to the Cyprinidae family. This active and large fish lives in schools. Although it is undemanding and quite easy to keep, the necessity of…
Hypsolebias picturatus
Rivulidae
Hypsolebias picturatus
Hypsolebias picturatus is the scientific name for this fish. This species belongs to the family Rivulidae and is found in the water bodies of the eastern states of Brazil, within the São Francisco River basin. Its…
Iban Betta
Osphronemidae
Betta ibanorum
The scientific name Betta ibanorum was given to this fish from the family Osphronemidae in honor of the inhabitants of northwestern Borneo, known as the Ibans. Known as the Iban Betta, it is characterized by its…
Idei's Betta
Osphronemidae
Betta ideii
The scientific name Betta ideii is given to Idei's Betta (or Idei's Fighting Fish), which belongs to the family Osphronemidae. It was named after Takashige Idei, a fish collector from Borneo who introduced many new…
Indian Featherback
Notopteridae
Chitala ornata
The Indian Featherback, or Chitala ornata by its scientific name, belongs to the family Notopteridae. It is a large fish distinguished by its unusual body shape. Keeping it requires significant financial investment and…
Indian Striped Barb
Cyprinids (Cyprinidae)
Haludaria melanampyx
The Indian Striped Barb, known scientifically as Haludaria melanampyx, belongs to the family Cyprinidae. It is worth noting some taxonomic uncertainty regarding this species, as some researchers consider it a variety of…
Indostomus
Indostomidae
Indostomus crocodilus
Indostomus crocodilus, or Indostomus, belongs to the Indostomidae family. Its unusual appearance is due to the practical necessity of camouflaging itself from potential predators. In a home aquarium it needs careful…
Inle Danio
Cyprinids (Cyprinidae)
Devario auropurpureus
The Inle Danio, scientifically known as Devario auropurpureus, is classified within the Cyprinidae family. This fish gets its name from Lake Inle, where the majority of its population resides. It is easy to keep,…
Irian Jaya Rainbowfish
Rainbowfishes (Melanotaeniidae)
Melanotaenia irianjaya
Melanotaenia irianjaya, also known as the Irian Jaya Rainbowfish, belongs to the family Melanotaeniidae. This fish is an excellent choice for beginner aquarists due to its unpretentiousness, ease of breeding and…
Iridescent Shark
Shark Catfishes (Pangasiidae)
Pangasianodon hypophthalmus
This fish, known scientifically as Pangasianodon hypophthalmus and belonging to the family Pangasiidae, is widely known as the Iridescent Shark. Other names include Siamese Pangasius, Shark Catfish, and Sutchi Catfish.…
Jack Dempsey cichlid
Cichlids (Cichlidae)
Rocio octofasciata
The scientific name Rocio octofasciata belongs to the Cichlidae family. In the world of aquarium enthusiasts, it is most commonly known as the Jack Dempsey Cichlid or the "Morning Dew" Cichlid. Another common name is…
Jae Barb
Cyprinids (Cyprinidae)
Enteromius jae
The Jae Barb, also known by its scientific name Enteromius jae, belongs to the family Cyprinidae. This miniature and picturesque fish can become a true gem in a nano aquarium. Its care and breeding are straightforward,…
Jaguar Catfish
Driftwood Catfishes (Auchenipteridae)
Liosomadoras oncinus
Liosomadoras oncinus is the scientific name for the Jaguar Catfish, a member of the Auchenipteridae family, or Wood Catfishes. These fish originate from South America, inhabiting the Branco River basin, which is a…
Jaintia Danio
Cyprinids (Cyprinidae)
Danio jaintianensis
The Jaintia Danio, scientifically known as Danio jaintianensis, belongs to the family Cyprinidae. The fish is named after the Jaintia Hills, where it was first discovered. Although this species is not frequently…
Japanese Loach
Cobitidae (Loaches)
Niwaella delicata
The Japanese Loach, scientifically known as Niwaella delicata, belongs to the family Cobitidae (Loaches). This fish is valued not only by aquarists but also as a commercial catch. It is most commonly found in Japan,…
Japanese Ricefish
Adrianichthyidae
Oryzias latipes
The Japanese Ricefish, scientifically known as Oryzias latipes, is a species belonging to the family Adrianichthyidae. This small and graceful fish has enjoyed consistent popularity in Southeast Asia for many centuries,…
Java Barb
Cyprinids (Cyprinidae)
Systomus rubripinnis
The Java Barb, scientifically known as Systomus rubripinnis, is a member of the Cyprinidae family. This rather large fish exhibits remarkable hardiness and relatively low maintenance requirements. It is rarely…
Javanese Betta
Osphronemidae
Betta picta
Betta picta, known as the Javanese Betta, belongs to the family Osphronemidae (Labyrinth fish or Gourami). Interestingly, despite its name and classification, this species shows more resemblance to Gouramis than to…
Jellyfish Bristlenose Pleco
Armored Catfishes (Loricariidae)
Ancistrus ranunculus
Ancistrus ranunculus, or the Jellyfish Bristlenose Pleco, belongs to the Loricariidae family — the armored catfish. Its scientific name is Ancistrus ranunculus. The unusual appearance of this catfish can evoke mixed…
Jewel Cichlid
Cichlids (Cichlidae)
Rubricatochromis bimaculatus
Rubricatochromis bimaculatus, or the Jewel Cichlid, belongs to the family Cichlidae. This fish possesses a bright, attractive appearance, however, its temperament can create difficulties for other aquarium inhabitants.…
Jikin
Cyprinids (Cyprinidae)
Carassius auratus
Among the many varieties of Goldfish, the Jikin is the rarest. It is almost impossible to find in amateur aquariums, as its distribution has been significantly restricted since 1958, when it was listed as a protected…
Julidochromis dickfeldi
Cichlids (Cichlidae)
Julidochromis dickfeldi
Julidochromis dickfeldi, scientifically known as Julidochromis dickfeldi, belongs to the Cichlidae family. These fish form strong pair bonds and display pronounced jealousy towards their conspecifics. However, they can…
Julidochromis ornatus
Cichlids (Cichlidae)
Julidochromis ornatus
Julidochromis ornatus, or Ornate Julie, is a fish from the Cichlidae family. This species is characterized by its activity and bright coloration, as well as exhibiting complex intraspecific interactions. Its keeping and…
Julidochromis regani
Cichlids (Cichlidae)
Julidochromis regani
Julidochromis regani, with the scientific name Julidochromis regani, belongs to the family Cichlidae. This cichlid is quite popular among aquarists. Like many members of its family, it can show aggression towards…
Julii Corydoras
Armored Catfish (Callichthyidae)
Corydoras julii
Corydoras julii, scientifically known as Corydoras julii, belongs to the family Callichthyidae. This catfish is likely one of the most sought-after by aquarists among its relatives. Its distinguishing features, such as…
Jullien's Golden Carp
Cyprinids (Cyprinidae)
Probarbus jullieni
Jullien's Golden Carp, known by its scientific name Probarbus jullieni, belongs to the family Cyprinidae, or carps. Its natural habitat includes the extensive river systems of Southeast Asia, including the Mekong and…
Jumbo Dwarf Suckermouth Catfish
Armored Catfishes (Loricariidae)
Parotocinclus jumbo
Parotocinclus jumbo, or the jumbo dwarf suckermouth catfish, belongs to the armored catfish family (Loricariidae). It is noteworthy that "jumbo" translates to "giant," which at first glance may seem unexpected, as the…
Kabi Rainbowfish
Rainbowfishes (Melanotaeniidae)
Glossolepis kabia
The fish, known by its scientific name Glossolepis kabia, or Kabi Rainbowfish, is a member of the family Melanotaeniidae (Rainbowfishes). Its native habitat is Papua New Guinea, where it lives in the Sepik and Ramu…
Kerri Tetra
Acestrorhamphidae
Inpaichthys kerri
A miniature fish with original coloration, particularly prominent in males, the Kerri Tetra or Purple Emperor Tetra, scientifically known as Inpaichthys kerri, belongs to the Acestrorhamphidae family. It is…
Keyhole Cichlid
Cichlids (Cichlidae)
Cleithracara maronii
The Keyhole Cichlid, scientifically known as Cleithracara maronii, belongs to the Cichlidae family and is often referred to as the “Keyhole” cichlid. Despite its subdued coloration, this species is valued for its…
Kigoma Red
Cichlids (Cichlidae)
Altolamprologus compressiceps
Altolamprologus compressiceps, also known as the Compressed Humphead or Kigoma Red, is a member of the Cichlidae family. It is a peaceful predator that only shows aggression towards very small fish. It coexists well…
Kissing Gourami
Kissing Gouramis (Helostomatidae)
Helostoma temminckii
The scientific name Helostoma temminckii refers to the Helostomatidae family, to which the Kissing Gourami belongs. This is one of the most remarkable aquarium fish, attracting the close attention of aquarists for many…
Kitty Tetra
Acestrorhamphidae
Hyphessobrycon heliacus
The Kitty Tetra, scientifically known as Hyphessobrycon heliacus, belongs to the family Acestrorhamphidae. This fish originates from South America, where it is found in the Telis Pires River basin. This river, in turn,…
Knight Corydoras
Armored Catfish (Callichthyidae)
Corydoras eques
The Knight Corydoras, scientifically named Corydoras eques, is a member of the Callichthyidae family, which includes armored or callichthyid catfishes. Its Latin name, eques, translates to "knight" or "horseman,"…
Knight Goby
Gobiidae
Stigmatogobius sadanundio
The Knight Goby, also known as the Spotted Goby (scientific name Stigmatogobius sadanundio), belongs to the family Gobiidae. Keeping them may not be the easiest, as they require brackish water and careful selection of…
Kohaku Swordtail
Poeciliidae
Xiphophorus hellerii
The Kohaku Swordtail, scientifically known as Xiphophorus hellerii (Koi Kohaku variety), belongs to the family Poeciliidae. This fish was bred artificially and does not occur in nature. Its name, "Kohaku," was given due…
Koi Swordtails
Poeciliidae
Xiphophorus hellerii
Koi Swordtails, a variety of Xiphophorus hellerii, belong to the Poeciliidae family. This common name refers to fish whose unique body coloration resembles ornamental Koi carp. Among the most sought-after strains are…
Kottelatia brittani
Cyprinids (Cyprinidae)
Kottelatia brittani
Kottelatia brittani, known as Brittan's Kottelatia, is a member of the Cyprinidae family. The fish is named after the Swiss ichthyologist Maurice Kottelat, as well as Martin Brittan, the monographer and reviser of the…
Kranos Loach
Cobitidae (Loaches)
Lepidocephalichthys kranos
The Kranos Loach, scientifically known as Lepidocephalichthys kranos, belongs to the family Cobitidae (Loaches). Its name, "kranos," comes from Greek and means "helmet," referring to the characteristic bony plates that…
Kretser's Paradise Fish
Osphronemidae
Malpulutta kretseri
Malpulutta kretseri, also known as Kretser's Paradise Fish, bears the scientific name Malpulutta kretseri and belongs to the family Osphronemidae. It was named in honour of the Sri Lankan lawyer De Kretser, who…
Kribensis
Cichlids (Cichlidae)
Pelvicachromis pulcher
Pelvicachromis pulcher, also known as Kribensis, belongs to the Cichlidae family, and its scientific name is Pelvicachromis pulcher. Due to its vibrant coloration, it is often called the Aquarium Parrot Cichlid. Among…
Kribensis taeniatus
Cichlids (Cichlidae)
Pelvicachromis taeniatus
A representative of the Cichlidae family, Kribensis taeniatus, also known by its scientific name Pelvicachromis taeniatus, is an attractive and rather undemanding fish. This fish readily coexists with many other…
Kuhli Loach
Cobitidae (Loaches)
Pangio kuhlii
The Kuhli Loach, also known as the Coolie Loach, bears the scientific name Pangio kuhlii and belongs to the family Cobitidae (loaches). This fish originates from Southeast Asia, particularly common on the islands of…