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.
Dwarf Livebearer
One of the smallest fish species in the world, this tiny freshwater livebearer from the southeastern United States is prized for its miniature size and easy breeding.
freshwater
Sterlet
The sterlet is the smallest widespread sturgeon species, a slender freshwater fish of Ponto-Caspian rivers known for its long, thin, upturned snout with fringed barbels.
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.
freshwaterZebra Danio
A small, torpedo-shaped freshwater fish famous for the bold horizontal blue and gold stripes running the length of its body, and widely used as a model species in scientific research.
freshwater
Masu Salmon
Masu salmon is the southernmost and westernmost Pacific salmon species, native to Japan, Korea, and the Russian Far East, notable for males that can mature and spawn entirely within freshwater.
freshwater
Australian Lungfish
One of the most primitive living fish, this large freshwater species has a single lung, paddle-like fins, and a lineage that has remained largely unchanged for over 100 million years.
freshwater
Yellow Perch
A golden-yellow freshwater fish marked by dark vertical bars and orange-tinged fins, native to lakes and slow-moving rivers across North America. It is one of the most abundant and widely recognized panfish species.
freshwater
Ember Tetra
A tiny, glowing orange-red tetra that shoals in large numbers and is among the smallest characins kept in freshwater aquaria.
freshwater