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.
Black Phantom Tetra
A gray-black Paraguay basin characin known for its dramatic sail-like dorsal fin displays and mild social hierarchy behavior among males.
freshwater
Black Skirt Tetra
A silvery-gray tetra with a flowing black skirt-like tail and fins, whose dark coloration typically fades somewhat as the fish matures.
freshwater
Black Neon Tetra
A small Brazilian tetra marked by a bold black horizontal stripe paired with a shimmering silvery-white line above it, a popular schooling fish in freshwater aquariums.
freshwater
Pristella Tetra
A translucent, pale-golden tetra whose semi-transparent body reveals internal structures, marked by distinctive black-and-yellow fin patches.
freshwater
Rummynose Tetra
A slender silvery tetra known for its bright red-orange snout and a bold black-and-white striped tail, prized for tight, synchronized shoaling.
freshwater
Penguin Tetra
An Amazonian characin recognized by its bold black tail stripe and unusual head-up swimming posture resembling a penguin's stance.
freshwater
Serpae Tetra
A vividly red-bodied tetra with a bold black shoulder patch, known for its assertive, nippy temperament within shoaling groups.
freshwater
Lemon Tetra
A pale yellow tetra from the Amazon basin, easily recognized by its lemon-tinted body and black-edged anal fin bordered in yellow.
freshwater
Emperor Tetra
A refined, violet-blue tetra from Colombia known for a bold black lateral stripe and males' elongated, sword-like central tail rays.
freshwater
Rummy-nose Tetra
A small schooling Amazonian tetra known for its bright red-orange snout and a bold black-and-white striped tail fin, prized in aquariums for its striking coloration and tight shoaling behavior.
freshwater
Red-eye Tetra
A hardy, wide-ranging South American characin identified by its striking red iris band and bold black-and-white marked tail base.
freshwater
Red Phantom Tetra
A blackwater Orinoco characin with a rosy translucent body and bold black shoulder mark, known for its tall, flag-like dorsal fin in males.
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
Neon Tetra
A tiny schooling characin from Amazonian blackwater streams, instantly recognized by its glowing blue-green stripe and bright red lower body, one of the most popular aquarium fish ever kept.
freshwater
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
Green Neon Tetra
A Rio Negro blackwater characin closely related to the Neon Tetra, identified by its shimmering blue-green stripe and limited rear-body red coloration.
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.
freshwater