Species Profiles
2742 articles- Agassiz's Dwarf Cichlid "Red" (Apistogramma agassizii) Care GuideA red ornamental form of Apistogramma agassizii, an Amazonian dwarf cichlid kept in soft, warm water with leaf litter and dim light.
- Agassiz's Dwarf Cichlid "Gold" (Apistogramma agassizii) Care GuideA golden ornamental form of Apistogramma agassizii, an Amazonian dwarf cichlid kept in soft, warm water with leaf litter and shade.
- Agassiz's Dwarf Cichlid "Blue" (Apistogramma agassizii) Care GuideA blue ornamental form of Apistogramma agassizii, an Amazonian dwarf cichlid that prefers soft, warm water with leaf litter and shade.
- 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.
- 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.
- Mediterranean Killifish Care GuideAphanius fasciatus is a small, banded Mediterranean killifish of brackish lagoons and salt marshes, tolerant of a wide salinity and temperat
- African Butterfly Cichlid Care GuideAnomalochromis thomasi is a small, very peaceful West African cichlid from forest streams that pairs off and spawns readily in soft-water co
- Triradiatus Bristlenose Care GuideAncistrus triradiatus is a hardy bristlenose from Colombian and Venezuelan streams, a peaceful, mostly herbivorous algae grazer for communit
- Medusa Pleco L034 Care GuideAncistrus ranunculus (L034) is a flat, tentacled bristlenose from the Xingu and Tocantins that needs warm, fast, oxygen-rich water and a pro
- Long-Fin Albino Bristlenose Care GuideThe long-fin albino bristlenose is a captive-bred ornamental Ancistrus form with extended fins and reduced pigment, sharing standard bristle
- Black Bristlenose L181 Care GuideAncistrus hoplogenys (L181) is a dark Amazonian bristlenose; the name covers a taxonomically confused group needing soft, acidic water.
- Spotted Bristlenose Care GuideAncistrus dubius is a peaceful bristlenose catfish from the Amazon, Parana and Paraguay basins, a bottom-dwelling algae grazer for community
- Starlight Bristlenose L183 Care GuideAncistrus dolichopterus (L183) is a black-water bristlenose from the Rio Negro that needs soft, acidic water and a mature, well-flowing aqua
- Gold Marble Ancistrus Care GuideAncistrus claro is a small bristlenose from rocky streams of the upper Paraguay drainage in Brazil, peaceful and diurnally active.
- Jumbie Bristlenose Care GuideAncistrus cirrhosus is a small armoured catfish from the Parana basin, a peaceful cave-spawning bristlenose that grazes on algae and aufwuch
- Calico Bristlenose Care GuideThe calico bristlenose is a captive-bred multicolour Ancistrus, a peaceful algae-grazing loricariid catfish for community tanks.
- Ancistrus brevipinnis (L059) Care GuideAncistrus brevipinnis (L059) is a short-finned bristlenose catfish, a peaceful algae-grazing loricariid for medium community tanks.
- Ancistomus snethlageae (L141) Care GuideAncistomus snethlageae (L141) is a mid-sized loricariid pleco from the Tapajós basin, requiring driftwood, caves and oxygen-rich water.
- Anampses lineatus Care GuideAnampses lineatus is an Indo-West Pacific reef wrasse from deeper reefs, a delicate marine species for advanced aquarists.
- Altum Angelfish Care GuidePterophyllum altum is the tallest angelfish, a blackwater specialist from the Orinoco and upper Rio Negro requiring soft, acidic water.
- Albino Tiger Barb Care GuideThe albino tiger barb is a selectively bred form of Puntigrus tetrazona, an active shoaling cyprinid prone to fin-nipping.
- Albino Guppy Care GuideThe albino guppy is a selectively bred form of Poecilia reticulata with reduced melanin, an easy-to-keep livebearer.
- Albino Discus Care GuideThe albino discus is a selectively bred colour form of Symphysodon, a tall-bodied Amazonian cichlid requiring warm, soft, stable water.
- Distichodus affinis Care GuideDistichodus affinis is a silvery African characiform from the Congo basin, a plant-grazing fish best kept in groups.
- Devario acrostomus Care GuideDevario acrostomus is a freshwater danionin from the Mekong basin in Laos, an active mid-water schooling cyprinid.
- Greenbanded Goby Care GuideElacatinus multifasciatus is a tiny Western Atlantic goby marked with many pale green bars that shelters among rock-boring urchin spines.
- Neon Goby Care GuideElacatinus oceanops is a small Western Atlantic cleaner goby with a bright blue stripe that removes parasites from larger fish.
- Multi-lined Coral Goby Care GuideGobiodon multilineatus is a tiny Western Pacific coral goby that lives among Acropora corals and forms monogamous pairs.
- Yellowlined Coral Goby Care GuideGobiodon axillaris is a tiny Indo-West Pacific coral goby that perches among Acropora corals; the IUCN lists it as Vulnerable.
- Earspot Coral Goby Care GuideGobiodon atrangulatus is a tiny Western Pacific coral goby that lives among Acropora corals in an obligate, monogamous social system.
- Green Clown Goby Care GuideGobiodon histrio is a tiny green coral goby of the Indo-West Pacific that perches on Acropora and releases a toxin to deter predators.
- Citron Goby Care GuideGobiodon citrinus is a small Indo-West Pacific coral goby with blue eye bars that lives among branching Acropora and produces toxic mucus.
- Yellow Clown Goby Care GuideGobiodon okinawae is a tiny bright-yellow coral goby that perches among the branches of staghorn Acropora corals in the Western Pacific.
- Ambanoro Shrimp Goby Care GuideVanderhorstia ambanoro is an Indo-West Pacific prawn goby of soft sand and mud bottoms that lives with Alpheus shrimp in coastal bays and la
- Steinitz' Shrimp Goby Care GuideAmblyeleotris steinitzi is a wide-ranging Indo-Pacific prawn goby with brown-barred pale body that shares a burrow with alpheid shrimp.
- Flagtail Shrimp Goby Care GuideAmblyeleotris yanoi is a Western Pacific prawn goby with a patterned yellow caudal fin that partners with the red-banded shrimp Alpheus rand
- Wheeler's Shrimp Goby Care GuideAmblyeleotris wheeleri is a widespread Indo-Pacific prawn goby that lives commensally with alpheid shrimp in reef rubble.
- Randall's Shrimp Goby Care GuideAmblyeleotris randalli is a Western Pacific prawn goby noted for orange-striped body and a tall first dorsal fin bearing a black-and-white e
- Spotted Shrimp Goby Care GuideAmblyeleotris guttata is a Western Pacific prawn goby with orange-spotted whitish body that shares a sand burrow with alpheid shrimp.
- White-bellied Watchman Goby Care GuideCryptocentrus albidorsus is a small Western Pacific shrimp goby that shares a burrow with snapping shrimp on silty sand.
- Bluespotted Tamarin Wrasse Care GuideAnampses caeruleopunctatus is a wide-ranging Indo-Pacific wrasse; adults are dark with electric-blue spots and juveniles mimic floating leav
- Yellowtail Tamarin Wrasse Care GuideAnampses meleagrides is an Indo-Pacific wrasse; females are black with white spots and a yellow tail, males iridescent. A delicate feeder ne
- Choat's Leopard Wrasse Care GuideMacropharyngodon choati is an eastern Australian leopard wrasse with orange blotches; it browses gastropods and foraminiferans and is a deli
- Black Leopard Wrasse Care GuideMacropharyngodon negrosensis is a small Indo-Pacific leopard wrasse; females are dark with pale spots and males show an intricate scale patt
- Vermiculate Leopard Wrasse Care GuideMacropharyngodon bipartitus is a small western Indian Ocean leopard wrasse with a reticulated pattern. It picks invertebrates from the subst
- Comb Wrasse Care GuideCoris picta is a small subtropical wrasse from eastern Australia with a black-and-white striped body; juveniles act as cleaner fish.
- Mediterranean Rainbow Wrasse Care GuideCoris julis is a temperate wrasse of the Mediterranean and eastern Atlantic. It buries in sand at night and is a protogynous hermaphrodite n
- Yellowtail Coris Care GuideCoris gaimard is an Indo-Pacific wrasse; vivid orange juveniles transform into blue-green adults with a yellow tail. A sand-burying sifter o
- Broomtail Wrasse Care GuideCheilinus lunulatus is a Red Sea and Arabian wrasse; adult males develop a broom-like fringed tail. It feeds on molluscs and hard-shelled in
- Red-breasted Wrasse Care GuideCheilinus fasciatus is an Indo-Pacific wrasse with a bold red breast band on a dark body; a sand-sifter that preys on hard-shelled invertebr