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.
Foureye Butterflyfish
A Caribbean butterflyfish with a large false eyespot near the tail and a real eye hidden by a dark bar.
reef
Spotted Scorpionfish
A heavily camouflaged reef fish with mottled brown, red, and white patterning and venomous dorsal spines, blending seamlessly into coral rubble and rocky bottom across the western Atlantic.
reef
Kokanee Salmon
Kokanee are a landlocked, non-migratory form of sockeye salmon that spend their entire life in freshwater lakes, turning bright red during their autumn spawning run into tributary streams.
freshwater
Coral Grouper
The coral grouper is a vivid orange-red reef fish covered in small electric-blue spots, commonly seen darting among coral heads across the Indo-Pacific.
reef
Cardinal Tetra
A tiny, jewel-toned freshwater fish with an iridescent blue stripe running the length of its body above a vivid red stripe below, native to the blackwater tributaries of the Amazon.
freshwater
Tomato Clownfish
A deep-bodied, orange-red anemonefish with a single white head bar, living in close partnership with a host sea anemone.
reef
Flame Hawkfish
A brilliant red-orange reef fish that perches motionless atop branching coral, darting out to ambush small prey.
reef
Racoon Butterflyfish
An Indo-Pacific butterflyfish with a black 'mask' over the eyes bordered by white and a broad yellow body.
reef
Banded Butterflyfish
A white Caribbean butterflyfish crossed by bold black vertical bands, including one masking the eye.
reef
Yellowtail Damselfish
A dark, deep-bodied Caribbean damselfish with a bright yellow tail, known for aggressively farming algae gardens.
reef
Palon Killifish
A small East African annual killifish in the genus Nothobranchius, with males displaying coppery orange-red coloring and blue speckling. It inhabits temporary coastal pools tied to seasonal rains.
freshwater
Murray River Rainbowfish
A slender, schooling rainbowfish native to Australia's Murray-Darling river system, displaying subtle pink-red stripes and yellow-tinted fins along its silvery-blue body.
freshwater
Midnight Parrotfish
A large, dark blue-black Caribbean parrotfish speckled with bright blue-green patches around the head.
reef
Longnose Hawkfish
A red-and-white lattice-patterned hawkfish with an unmistakable elongated snout, perched motionlessly on gorgonian sea fans across the Indo-Pacific.
reefBlood Parrot Cichlid
A rounded, vivid orange-red hybrid cichlid recognized by its permanently small, beak-like mouth and stubby, rounded fins.
freshwater
Colombian Tetra
A large, vividly rose-red characin native to northern Colombian rivers, notable for its bold coloration and confident schooling behavior.
freshwater
Chili Rasbora
One of the smallest cyprinids in the aquarium hobby, the Chili Rasbora is an intensely red nano fish native to Borneo's acidic blackwater swamps.
freshwater
Bleeding Heart Tetra
A deep-bodied upper Amazon characin marked by a small red 'bleeding heart' spot and, in males, a dramatic elongated dorsal fin.
freshwater
High-hat
A striking black-and-white striped reef drum related to the jackknife-fish, easily recognized by its tall, elongated dorsal fin.
reef
Saddleback Butterflyfish
A large Indo-Pacific butterflyfish with a bold black 'saddle' patch edged in white on the upper rear body.
reef
Rainbow Trout
A popular salmonid native to Pacific-drainage rivers of North America and Asia, known for its silvery body, dark spotting, and the broad pink-red stripe that gives the species its name.
freshwater
Picasso Triggerfish
A boldly patterned triggerfish with geometric blue, yellow, and black markings, common on shallow Indo-Pacific reef flats.
reefCeylon Killifish
An elongated, surface-dwelling killifish endemic to Sri Lanka, showing an orange-red body with fine dark speckling and iridescent scale flecking.
freshwater
Rainbow Killifish
A vividly patterned annual killifish from Mozambique's seasonal floodplain pools, with males displaying a rainbow of red, blue and orange scale colors.
freshwater