Species Profiles
2402 articles- Black Paradise Fish (Macropodus spechti) Care GuideMacropodus spechti is a dark-bodied Vietnamese paradise fish with metallic blue fin iridescence, hardy and tolerant of cooler water.
- Red-back Paradise Fish (Macropodus erythropterus) Care GuideMacropodus erythropterus is a hardy Vietnamese paradise fish with a brick-red back, endemic to a single river basin and tolerant of cooler w
- Vaillant's Chocolate Gourami (Sphaerichthys vaillanti) Care GuideSphaerichthys vaillanti is a demanding Bornean mouthbrooding gourami of blackwater peat swamps, needing very soft, acidic water and a quiet,
- Banded Gourami (Trichogaster fasciata) Care GuideTrichogaster fasciata is a South Asian labyrinth fish with diagonal blue and orange bands, larger and more boisterous than dwarf gouramis an
- Giant Betta (Betta anabatoides) Care GuideBetta anabatoides is a large slender Bornean mouthbrooder from varied freshwater habitats, kept in spacious, soft-water aquaria with calm ta
- Howong Betta (Betta unimaculata) Care GuideBetta unimaculata is a large Bornean mouthbrooding betta from clear flowing streams, an active predator best housed alone or with peaceful,
- Foersch's Betta (Betta foerschi) Care GuideBetta foerschi is a mouthbrooding wild betta endemic to southern Borneo, kept in soft, acidic forest-stream water.
- Painted Betta (Betta picta) Care GuideBetta picta is a mouthbrooding wild betta from highland streams of Java, kept in soft to slightly hard, gently flowing water.
- Penang Betta (Betta pugnax) Care GuideBetta pugnax is a robust mouthbrooding wild betta from Malayan streams, larger than most wild bettas and tolerant of varied water.
- Betta brownorum Care GuideBetta brownorum is a tiny bubble-nesting wild betta of the Betta coccina complex from peat swamp forests of Borneo.
- Cherry Betta (Betta coccina) Care GuideBetta coccina is a small bubble-nesting wild betta from peat-swamp forests of Sumatra and Peninsular Malaysia, needing soft, acidic blackwat
- Krabi Mouthbrooder (Betta simplex) Care GuideBetta simplex is a mouthbrooding wild betta endemic to limestone springs near Krabi, Thailand, unusual for tolerating hard, alkaline water.
- Persian Killifish (Aphaniops mento) Care GuideA hardy West Asian killifish of hard alkaline waters, with iridescent males and aggressive spawning best suited to a single-species tank.
- Mediterranean Killifish Care GuideAphanius fasciatus is a small, banded Mediterranean killifish of brackish lagoons and salt marshes, tolerant of a wide salinity and temperat
- Iberian Toothcarp (Aphanius iberus) Care GuideA small euryhaline killifish endemic to Spain's Mediterranean coast, suited to hard alkaline water and a single-species setup.
- Dwarf Lampeye (Lacustricola pumilus) Care GuideLacustricola pumilus is a small East African lampeye from the Lake Tanganyika drainage, suited to peaceful nano community aquariums.
- Procatopus nototaenia Lampeye Care GuideProcatopus nototaenia is a Cameroonian forest-stream lampeye killifish reaching about 6 cm, noted as difficult to maintain in aquaria.
- Variable Lampeye (Procatopus similis) Care GuideProcatopus similis is an African lampeye killifish from forest streams of Nigeria and Cameroon, reaching about 6 cm.
- Cubanichthys cubensis Care GuideCubanichthys cubensis, the Cuban killifish, is a hardy Cuban species of vegetated fresh and brackish waters, easy to keep.
- Laimosemion xiphidius Care GuideLaimosemion xiphidius is a small blackwater killifish from French Guiana, kept in tightly covered, soft, acidic nano tanks.
- Epiplatys lamottei Care GuideEpiplatys lamottei is a colourful West African surface killifish from upper Niger brooks, kept in soft, warm aquaria.
- Epiplatys multifasciatus Care GuideEpiplatys multifasciatus is a Central African surface killifish from forest streams of the Congo basin, kept in soft, warm tanks.
- Epiplatys sexfasciatus Care GuideEpiplatys sexfasciatus, the six-barred panchax, is a larger West and Central African surface predator for spacious soft-water tanks.
- Epiplatys dageti Care GuideEpiplatys dageti, the red-chinned panchax, is a peaceful West African surface killifish for soft, warm community tanks.
- Aplocheilus blockii Care GuideAplocheilus blockii, the dwarf panchax, is a small Indian and Sri Lankan surface killifish suited to peaceful nano aquaria.
- Aplocheilus dayi Care GuideAplocheilus dayi, the Ceylon killifish, is an endangered Sri Lankan surface predator of shaded streams and brackish swamps.
- Aplocheilus panchax Care GuideAplocheilus panchax, the blue panchax, is a widespread Asian surface predator tolerant of fresh and brackish water.
- Fundulopanchax filamentosus Care GuideFundulopanchax filamentosus, the plumed lyretail, is a West African killifish from coastal rainforest swamps, kept in soft, warm water.
- Fundulopanchax amieti Care GuideFundulopanchax amieti is a robust, endangered Cameroonian killifish from the lower Sanaga system, kept in soft, warm aquaria.
- Fundulopanchax gardneri ahli Care GuideFundulopanchax gardneri ahli is a hardy West African killifish from Nigeria and Cameroon, well suited to soft, neutral aquaria.
- Aphyosemion bivittatum Care GuideAphyosemion bivittatum is a non-annual killifish from coastal rainforest brooks of Nigeria and Cameroon, requiring soft, warm water.
- Aphyosemion cognatum Care GuideAphyosemion cognatum is a small non-annual killifish from the Congo basin, suited to soft, warm, well-planted aquaria.
- Aphyosemion striatum Care GuideAphyosemion striatum is a small non-annual killifish from coastal Gabon and Equatorial Guinea, kept in soft, peaceful blackwater aquaria.
- Boitone's Pearlfish (Simpsonichthys boitonei) Care GuideSimpsonichthys boitonei is a small annual killifish endemic to Brazil, living in seasonal pools of the upper Parana basin.
- Longfin Killifish (Pterolebias longipinnis) Care GuidePterolebias longipinnis is an annual killifish from the Amazon and Paraguay basins, with greatly extended unpaired fins in males.
- Austrofundulus limnaeus Care GuideAustrofundulus limnaeus is an annual killifish from Venezuelan pools, famous for embryos that survive desiccation and total anoxia.
- Argentine Pearlfish Care GuideAustrolebias bellottii is an annual killifish of the lower Parana and Uruguay basins, formerly known as Cynolebias bellottii, living in seas
- 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 kilomberoensis Care GuideNothobranchius kilomberoensis is an annual killifish from the seasonal pools of the Kilombero floodplain in Tanzania, with bright blue scali
- Nothobranchius patrizii Care GuideNothobranchius patrizii is a small annual killifish from coastal pools of Kenya and Somalia, with a powder-blue body, red speckling and a le
- 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
- 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 korthausae Care GuideNothobranchius korthausae is an annual killifish endemic to seasonal pools on Mafia Island, Tanzania, whose eggs survive desiccation in drie
- Ten-spotted Livebearer Care GuideCnesterodon decemmaculatus is a tiny, cool-tolerant South American livebearer with black flank spots, suited to small unheated planted tanks
- 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.
- Atlantic Molly Care GuideThe Atlantic molly (Poecilia mexicana) is a hardy Central American livebearer tolerant of fresh, brackish and even hypersaline water.
- Poecilia parae Care GuidePoecilia parae is a small livebearing fish from northern South America notable for at least five distinct, Y-linked male colour morphs.
- Pike Top Minnow (Belonesox belizanus) Care GuideBelonesox belizanus is a predatory livebearer of the family Poeciliidae from Central America, resembling a small freshwater pike and reachin
- Pittier's Livebearer (Phallichthys pittieri) Care GuidePhallichthys pittieri is a Central American livebearer of the family Poeciliidae, now treated as the orange-dorsal form of Phallichthys amat
- 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.