Species Profiles
2402 articles- Astyanax bimaculatus Care GuideAstyanax bimaculatus is a hardy, widespread South American tetra named for the dark spots on its shoulder and caudal base.
- Paraguay Bloodfin (Aphyocharax paraguayensis) Care GuideAphyocharax paraguayensis is a small, active South American tetra, also known as the dawn tetra, from streams of the Amazon and Paraguay riv
- Xingu Tetra Care GuideMoenkhausia xinguensis is a South American tetra from the Xingu River basin in Brazil, a peaceful schooling characid.
- Glass Tetra (Moenkhausia oligolepis) Care GuideMoenkhausia oligolepis is a peaceful South American tetra known for its scale outlines and red eye, native to Venezuela, the Guianas and the
- Bandtail Tetra Care GuideMoenkhausia dichroura is a hardy silvery South American tetra of the Amazon, Paraguay and Orinoco basins.
- Costa's Tetra Care GuideMoenkhausia costae is a small schooling characin from the Sao Francisco and Itapicuru rivers of Brazil, reaching about 7 cm.
- Marginatus Tetra (Hemigrammus marginatus) Care GuideHemigrammus marginatus is a slim, silvery South American tetra with yellow markings on the caudal fin, kept as a peaceful shoaling species.
- Featherfin Tetra Care GuideHemigrammus unilineatus is a peaceful silver tetra from northern South America with white-tipped fins and easy care.
- Levis Tetra Care GuideHemigrammus levis is a small translucent characin from the Amazon basin, suited to peaceful planted community aquariums in groups.
- Gold Tetra Care GuideHemigrammus rodwayi is the gold tetra, whose wild golden sheen results from a skin reaction to a parasite. A peaceful, hardy shoaling charac
- Garnet Tetra Care GuideHemigrammus pulcher, the garnet or pretty tetra, is an easygoing characin from the upper Amazon near Iquitos with a copper sheen and a dark
- Blue Tetra (coeruleus) Care GuideHemigrammus coeruleus is a Rio Negro characin with a blue-green sheen and dark caudal markings, kept as a peaceful blackwater schooling fish
- January Tetra Care GuideHemigrammus hyanuary is a slim peaceful tetra from the Amazon basin with a blue-green lateral stripe, often used as a dither for dwarf cichl
- Featherfin Tetra (stictus) Care GuideHemigrammus stictus is a compact characin from the Amazon, Negro and Orinoco basins, kept as a peaceful schooling fish in soft, acidic water
- Buenos Aires Tetra Care GuideHemigrammus caudovittatus is a hardy, relatively large tetra from the Rio de la Plata basin, tolerant of cooler water but known to nibble so
- False Rummynose Tetra Care GuidePetitella georgiae, the false rummynose, is a slim red-headed characin from the Rio Purus and other basins, widely traded as a rummynose sub
- True Rummynose Tetra Care GuideHemigrammus bleheri, the firehead or rummynose tetra, is a tight-schooling characin from the Rio Negro and Orinoco basins with a vivid red h
- Yellow Tetra (eos) Care GuideHyphessobrycon eos, the Dawn tetra, is a small characin recorded from the Guianas, kept as a peaceful schooling fish in soft tinted water.
- Purple Tetra Care GuideHyphessobrycon metae is a small tetra from the Orinoco basin, a peaceful schooler that suits soft, dimly lit Amazonian aquariums.
- Werner's Tetra Care GuideHyphessobrycon werneri is a small Brazilian characin from the Guama River basin, suited to soft, slightly acidic planted community aquariums
- Calypso Tetra Care GuideHyphessobrycon axelrodi is a small characin endemic to Trinidad, found in fresh and brackish swamp-edge waters and kept as a peaceful school
- Compressed Tetra Care GuideHyphessobrycon compressus (Compressed Tetra) is a robust deep-bodied characin from the Rio Papaloapan basin in Mexico, more tolerant of hard
- Kitty Tetra Care GuideHyphessobrycon heliacus (Kitty Tetra) is a tiny peaceful characin from the Teles Pires River in the upper Tapajos basin of Brazil, kept in s
- Coffee Bean Tetra Care GuideHyphessobrycon takasei (Coffee Bean Tetra) is a small peaceful characin from the Araguari and Oyapock river basins, suited to soft nano blac
- Ornate Tetra Care GuideHyphessobrycon bentosi (Ornate Tetra) is a small pinkish characin from the Amazon basin with white-tipped fins, a peaceful schooling fish fo
- Socolof's Tetra Care GuideHyphessobrycon socolofi is a peaceful characin from the rio Negro basin in Brazil, resembling a smaller bleeding heart tetra and suited to s
- Loreto Tetra Care GuideHyphessobrycon peruvianus (Loreto Tetra) is a small peaceful characin from the upper Amazon basin of Peru, best kept in soft, slightly acidi
- Synodontis ornatissimus Care GuideSynodontis ornatissimus is an ornately marbled African squeaker catfish from the Ubangi River drainage of the Congo basin, peaceful and larg
- Corydoras cervinus Care GuideCorydoras cervinus is a small armoured catfish from the Guapore River basin in Brazil, a peaceful schooling bottom-dweller for soft-sand com
- Corydoras loxozonus Care GuideCorydoras loxozonus is a small Colombian armoured catfish from the Meta River basin, a peaceful schooling bottom-dweller for soft-sand commu
- Colombian Zebra Pleco (L129) Care GuideHypancistrus debilittera (L129) is a small loricariid catfish from the Orinoco basin of Colombia and Venezuela, kept on caves and a meaty di
- Gold Spot Pleco (L001) Care GuidePterygoplichthys joselimaianus (Gold Spot Pleco, L001) is a large sailfin pleco endemic to the Tocantins basin in Brazil, reaching nearly 40
- Pseudancistrus pectegenitor (L259) Care GuidePseudancistrus pectegenitor (L259) is a loricariid catfish of the upper Orinoco in Venezuela, a peaceful algae grazer reaching about 24 cm.
- Hopliancistrus tricornis (L017) Care GuideHopliancistrus tricornis is a rare loricariid catfish (L017) endemic to the Tapajos and Xingu river basins of Brazil, listed as Endangered b
- Magnum Pleco (L031) Care GuideParancistrus aurantiacus (L031, Magnum Pleco) is a robust loricariid from the Ucayali, Tocantins and Xingu basins needing strong flow and cl
- Sunshine Plus Pleco (L048) Care GuideScobinancistrus pariolispos (L048) is a large spotted loricariid from the Tocantins and Tapajos basins, closely related to L014 with similar
- Sunshine Pleco (L014) Care GuideScobinancistrus aureatus (L014, Sunshine Pleco) is a large Xingu loricariid with yellow spotting; a carnivore-leaning pleco needing warm, ox
- Common Whiptail Catfish Care GuideHemiloricaria parva (Rineloricaria parva) is a small whiptail loricariid from southern South America that needs driftwood, cover and clean w
- Wavy Corydoras Care GuideCorydoras undulatus is a small catfish from the lower Parana basin and southern Brazil, peaceful and kept in groups on soft sand.
- Gladys's Corydoras Care GuideCorydoras gladysae is a small catfish endemic to the Calchaqui river system in Salta, Argentina, tolerant of cooler subtropical water.
- Pinheiro's Corydoras Care GuideCorydoras pinheiroi is a small peaceful catfish from Rondonia, Brazil, that prefers well-oxygenated water and is kept in groups.
- Pastaza Corydoras Care GuideCorydoras pastazensis is a long-snouted Ecuadorian and Peruvian catfish, peaceful and gregarious, kept in groups on soft sand.
- Black Bullhead Care GuideAmeiurus melas is a hardy North American bullhead catfish tolerant of poor water and cold; it is a pond species and is invasive in parts of
- Channel Catfish Care GuideIctalurus punctatus is a large North American freshwater catfish reaching over a metre; it is a pond and aquaculture species, not a true aqu
- Wels Catfish (Silurus glanis) Care GuideSilurus glanis is one of the largest freshwater fish in Europe, a cold-water predator suitable only for public aquaria.
- Korean Stone Catfish Care GuideLiobagrus reinii is a small torrent catfish endemic to Japan, living among cobbles in cool, well-oxygenated streams.
- Crystal-Eyed Catfish Care GuideHemibagrus wyckii is a large, highly aggressive Asian bagrid catfish from Southeast Asian rivers, suited only to very large or public aquari
- Banded African Whiptail Catfish (Phractura ansorgii) Care GuidePhractura ansorgii is a small West African whiptail catfish of the family Amphiliidae, associated with flowing waters in Nigeria and Togo.
- Ornate African Catfish (Chrysichthys ornatus) Care GuideChrysichthys ornatus is a freshwater claroteid catfish native to the Congo River basin in Central Africa, reaching about 25 cm.
- Auchenipterus nuchalis Care GuideAuchenipterus nuchalis is a free-swimming South American driftwood catfish active near the surface at dusk and at night.