Fish Encyclopedia
Search and identify 1,000+ fish species — freshwater, saltwater, reef, and pelagic — with habitat, size, diet, behavior, and how to tell them apart.
Rock Gunnel
A slender, eel-like intertidal fish of the North Atlantic, the Rock Gunnel hides under rocks and seaweed and is marked by a row of pale-ringed spots along its dorsal fin.
saltwater
Grey Gurnard
A bottom-dwelling gurnard with an armored, pale-spotted grey-brown back and large bluish pectoral fins, common across sandy shelf waters of Europe.
saltwater
Clown Killifish
A tiny, torpedo-shaped killifish from West African rainforest streams, patterned with alternating black and cream bands and a fiery red-and-blue tail resembling a tiny rocket.
freshwater
Forktail Rainbowfish
A tiny, colorful blue-eye rainbowfish from New Guinea named for its distinctively forked, yellow-edged tail fin.
freshwater
Red Rainbowfish
A striking, deep-bodied rainbowfish endemic to Lake Sentani in Papua, New Guinea, with adult males turning an intense salmon-red as they mature.
freshwater
Neon Rainbowfish
A small, brilliantly colored rainbowfish from New Guinea whose males flash iridescent blue-violet when displaying to rivals or mates.
freshwater
Lacustrine Rainbowfish
A brilliant turquoise-blue rainbowfish endemic to Lake Kutubu in Papua New Guinea, now considered endangered due to pollution linked to nearby natural gas extraction.
freshwater
Australian Rainbowfish
A widespread, variably colored rainbowfish found across tropical Australian and southern New Guinea waterways, ranging from olive-silver to vivid blue and yellow forms.
freshwater
Sepik Rainbowfish
A deep-bodied rainbowfish from the floodplain lakes and swamps of the Sepik River in Papua New Guinea, covered in unusually fine, numerous scales.
freshwater
Dwarf Neon Rainbowfish
A pint-sized New Guinea rainbowfish and one of the smallest Melanotaenia species, known in the aquarium trade for its saturated blue-violet males.
freshwater
Emerald Rainbowfish
A deep-bodied rainbowfish endemic to Lake Wanam in Papua New Guinea, with mature males displaying a brilliant iridescent emerald-green sheen.
freshwater
Lake Wanam Rainbowfish
A deep-bodied rainbowfish endemic to the small crater Lake Wanam in Papua New Guinea, with males showing rich orange-red body coloration.
freshwater
Boeseman's Rainbowfish
Boeseman's Rainbowfish is a vividly two-toned freshwater fish from New Guinea, with a blue-violet front half and a fiery orange-yellow rear half.
freshwater
Jardini Arowana
A large, metallic-scaled arowana from northern Australia and New Guinea, known for its bronze-green body and upward-facing mouth built for surface feeding.
freshwater
Parkinson's Rainbowfish
A large, robust rainbowfish from the eastern rivers of Papua New Guinea, with mature males displaying a striking golden-orange rear half contrasting with a bluish-silver front.
freshwater
Peacock Gudgeon
A vividly colored, peaceful gudgeon from Papua New Guinea, prized in aquariums for its blue-spangled body, orange fins, and calm temperament rare among small predatory fish.
freshwater
Peacock Goby
A small, brightly colored sleeper goby from Papua New Guinea, with a rounded body patterned in iridescent blue spots over an orange-to-purple base. A dark eye-like spot near the tail gives it its scientific species name.
freshwater