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.
Buenos Aires Tetra
A hardy, cold-tolerant characin from the Parana-La Plata basin, prized in aquariums for its active schooling behavior and subtropical resilience.
freshwater
Blind Cave Tetra
A ghostly pink, eyeless cavefish descended from surface-dwelling Mexican tetras, adapted over millennia to life in total darkness within Mexican limestone caves.
freshwater
X-ray Tetra
A translucent coastal South American characin whose see-through body and bold black-white-yellow fin markings make it instantly recognizable.
brackish
Von Rio Tetra
A small, fiery-red tetra native to coastal rivers near Rio de Janeiro, notable for two dark shoulder spots and deep red hindquarters.
freshwater
Silver Tip Tetra
A bronze-bodied Brazilian characin notable for lacking an adipose fin and for its bright white-tipped fins, active in fast-moving shoals.
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
Head and Tail Light Tetra
An Amazon and Guiana river characin named for its glowing metallic eye and tail-base spots, resembling a pair of tiny headlights.
freshwater
White Cloud Mountain Minnow
A hardy, cold-tolerant minnow with a metallic green-gold stripe and red-tinted fins, native to cool mountain streams in southern China.
freshwater
Green Tiger Barb
A green-toned color variant of the popular Tiger Barb, retaining the same bold dark bands and active, schooling nature as the classic orange form.
freshwater
Mbu Pufferfish
The Mbu Pufferfish is the largest freshwater pufferfish species, native to Central Africa's Congo River system and known for its maze-like yellow body markings.
freshwater
Tiger Barb
A small, deep-bodied freshwater fish marked with four bold black vertical bars across a golden-orange body, often seen darting energetically in tight schools.
freshwaterMexican Lamprey
The Mexican lamprey is a jawless fish endemic to freshwater rivers of the central Mexican highlands, one of the few lamprey species found so far south in North America.
freshwater
Shortbill Spearfish
A slender billfish with an unusually short bill relative to its body, found in warm offshore waters worldwide and considered the smallest of the true spearfish.
pelagic