Species Profiles
2742 articles- Nothobranchius kilomberoensis Care GuideNothobranchius kilomberoensis is an annual killifish from the seasonal pools of the Kilombero floodplain in Tanzania, with bright blue scali
- Nothobranchius kafuensis Care GuideNothobranchius kafuensis is an annual killifish from the Kafue and upper Zambezi rivers in Zambia, with an electric-blue body and orange-red
- Nothobranchius guentheri Care GuideNothobranchius guentheri, the redtail notho, is an annual killifish endemic to Zanzibar and one of the longest-known species in the hobby.
- Nothobranchius furzeri Care GuideNothobranchius furzeri, the turquoise killifish, is an annual fish noted as the shortest-lived vertebrate kept in captivity and a model orga
- Nothobranchius eggersi Care GuideNothobranchius eggersi is an annual killifish from temporary pools of the lower Rufiji River in Tanzania, best kept as a single male with se
- Neoglyphidodon oxyodon Care GuideNeoglyphidodon oxyodon is a Western Pacific damselfish whose dark-blue streaked juveniles fade to a grey-black, territorial adult.
- Neoglyphidodon nigroris Care GuideNeoglyphidodon nigroris is an Indo-Pacific damselfish whose bright striped juveniles darken with age and become territorial adults.
- Bowtie Damselfish (Neoglyphidodon melas) Care GuideNeoglyphidodon melas is an Indo-Pacific marine damselfish reaching about 18 cm; juveniles are bright, adults nearly black, and it is not ree
- Neochromis nigricans Care GuideNeochromis nigricans is an algae-grazing haplochromine cichlid endemic to Lake Victoria, reaching about 9 cm.
- Western Mosquitofish (Gambusia affinis) Care GuideGambusia affinis is a hardy North American livebearer widely introduced for mosquito control and now considered invasive in many regions.
- Mosaic Guppy Care GuideThe Mosaic Guppy is a selectively bred strain of Poecilia reticulata with a mottled, multi-coloured tail; a hardy, peaceful livebearer.
- South American Bumblebee Catfish (Microglanis iheringi) Care GuideMicroglanis iheringi is a small banded catfish from Venezuela, reaching about 6 cm, peaceful with fish too large to swallow.
- Zebra Mbuna (Maylandia zebra) Care GuideMaylandia zebra is the original 'zebra' mbuna of Lake Malawi, an algae-grazing cichlid reaching about 11 cm with many colour morphs.
- Aurora Cichlid (Maylandia aurora) Care GuideMaylandia aurora is a mbuna cichlid from Likoma Island in Lake Malawi, with golden flanks and a blue head in dominant males.
- Merry Widow (Phallichthys amates) Care GuidePhallichthys amates is a hardy, peaceful Central American livebearer reaching about 6 cm, found in still waters from Guatemala to Panama.
- Melanochromis parallelus Care GuideMelanochromis parallelus (a synonym of M. loriae) is a parallel-striped mbuna cichlid endemic to Lake Malawi, reaching about 12 cm.
- Megalodoras uranoscopus Care GuideMegalodoras uranoscopus is a large armoured talking catfish from Amazonian rivers, reaching about 60 cm and requiring very large aquaria.
- Marlboro Red Discus Care GuideMarlboro Red is a selectively bred solid-red discus strain of the genus Symphysodon, an Amazonian cichlid that needs warm, soft, acidic wate
- 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.
- Jaguar Cichlid (Parachromis managuensis) Care GuideParachromis managuensis is a large, highly predatory Central American cichlid requiring a very large tank and careful tankmate selection.
- Lyretail Swordtail Care GuideThe Lyretail Swordtail is a selectively bred form of Xiphophorus hellerii, a livebearer of Mexico and Central America in which males bear a
- Lyretail Molly Care GuideThe Lyretail Molly is a selectively bred livebearer derived from Poecilia sphenops, a hardy molly of Central America that prefers hard, alka
- Common Loricaria (Loricaria simillima) Care GuideLoricaria simillima is a slender, peaceful South American whiptail catfish that requires soft sand, driftwood and clean water.
- Longfin Tetra (Brycinus longipinnis) Care GuideBrycinus longipinnis is a robust, active African characin in which mature males develop an elongated dorsal fin.
- Long-fin Rosy Barb Care GuideThe Long-fin Rosy Barb is a selectively bred form of Pethia conchonius, a hardy subtropical shoaling cyprinid from southern Asia.
- Long-fin Cherry Barb Care GuideThe Long-fin Cherry Barb is a selectively bred form of Puntius titteya, a peaceful shoaling cyprinid endemic to Sri Lanka.
- Longfin Black Skirt Tetra Care GuideThe Longfin Black Skirt Tetra is a selectively bred form of Gymnocorymbus ternetzi, a peaceful shoaling characid from South America.
- Long-nose Distichodus Care GuideDistichodus lusosso is a large, long-snouted herbivorous fish from the Congo River basin that grows too large and plant-destructive for most
- Matumbi Hunter Care GuideLipochromis sp. "Matumbi Hunter" is a paedophagous haplochromine cichlid of Lake Victoria's Mwanza Gulf that preys on the broods of mouthbro
- Korean Stone Catfish Care GuideLiobagrus reinii is a small torrent catfish endemic to Japan, living among cobbles in cool, well-oxygenated streams.
- Perugia's Limia Care GuideLimia perugiae is a Hispaniolan livebearer from the Dominican Republic that prefers hard, slightly alkaline water and bears live young.
- Black-bellied Limia Care GuideLimia melanogaster is a hardy Caribbean livebearer from Jamaica that thrives in hard, alkaline water and gives birth to live young.
- Levis Tetra Care GuideHemigrammus levis is a small translucent characin from the Amazon basin, suited to peaceful planted community aquariums in groups.
- Sultan Pleco (L264) Care GuideLeporacanthicus joselimai (L264) is a loricariid catfish endemic to the Tapajos River basin of Brazil, listed as Vulnerable by the IUCN.
- Heterodon Pleco (L172) Care GuideLeporacanthicus heterodon (L172) is a loricariid catfish from the Xingu River basin of Brazil with characteristic enlarged teeth.
- Leopold's Angelfish Care GuidePterophyllum leopoldi is the smallest angelfish of its genus, native to the Amazon basin and Guyana, with a single dark patch over the gill
- Leopard Discus Care GuideLeopard Discus is a selectively bred ornamental line of Symphysodon, a laterally compressed Amazonian cichlid that practises intensive bipar
- Lasiancistrus heteracanthus Care GuideLasiancistrus heteracanthus is a loricariid pleco from the Río Napo basin that needs driftwood, caves and clean, well-oxygenated water.
- Dwarf Lampeye (Lacustricola pumilus) Care GuideLacustricola pumilus is a small East African lampeye from the Lake Tanganyika drainage, suited to peaceful nano community aquariums.
- Hawaiian Cleaner Wrasse (Labroides phthirophagus) Care GuideLabroides phthirophagus is a Hawaiian endemic cleaner wrasse; it feeds obligately on fish ectoparasites and is challenging to keep long term
- Black-spot Cleaner Wrasse (Labroides pectoralis) Care GuideLabroides pectoralis is an Indo-Pacific cleaner wrasse with a black spot at the pectoral-fin base; it feeds on ectoparasites and is demandin
- Bicolor Cleaner Wrasse (Labroides bicolor) Care GuideLabroides bicolor is an Indo-Pacific cleaner wrasse that feeds on the ectoparasites of other fish; its specialized diet makes it difficult t
- Textilis Lab (Labidochromis textilis) Care GuideLabidochromis textilis is a slim mbuna cichlid endemic to Lake Malawi, kept in hard-water rock communities of similar temperament.
- Chisumulae Lab (Labidochromis chisumulae) Care GuideLabidochromis chisumulae is a small mbuna cichlid endemic to Chisumulu Island in Lake Malawi, suited to rock-dwelling Malawi communities.
- Koi Angelfish (Pterophyllum scalare "Koi") Care GuideThe Koi Angelfish is a selectively bred color form of Pterophyllum scalare, a tall-bodied Amazonian cichlid for community aquariums.
- Kohaku Koi Care GuideKohaku is a white-bodied koi variety with red markings, a coldwater pond fish bred from Cyprinus carpio requiring a large outdoor pond.
- Slender Tetra (Iguanodectes spilurus) Care GuideIguanodectes spilurus is an elongated South American tetra from Amazon and Orinoco tributaries, kept in soft-water groups.
- Inspector Pleco L102 Care GuideHypancistrus inspector (traded as L102) is a loricariid catfish from the upper Negro and Orinoco basins, with white spots on a dark body and
- Queen Arabesque Pleco L260 Care GuideHypancistrus furunculus (traded as L260, Queen Arabesque) is a small loricariid catfish from the Orinoco basin in Venezuela; a carnivorous c
- Snowball Pleco L201 Care GuideHypancistrus contradens (traded as L201) is a small loricariid catfish from the Orinoco basin in Venezuela, requiring caves and clean flowin