School of Piranha swimming to the right of the image with an plant on the right side and an aqua blue background.

Fish

Fish are aquatic, limbless vertebrate animals with gills and fins. The gills help fish breathe underwater, and the fins aid in movement. Most fish are cold-blooded, or ectothermic.

side view of a gray fish with black bands along its body

Banded Archerfish

The archerfish targets aerial prey by shooting a jet of water from its mouth.
a Bucktooth tetra with 2 big black spots and red tipped fins.

Bucktooth Tetra

This small, torpedo-shaped fish is a small but fierce predator.
The underside of a stingray showing its mouth and mottled skin

Polka-Dot Stingray

The polka-dot stingray is a freshwater species native to Brazil’s Xingu River Basin.
An adult red rainbow fish with brown vegetation in the background

Rainbowfish

Rainbowfish are named for the iridescent colors that refract from their scales.
A group of small, black and white-striped fish float among green plants.

Striped Leporinus

This freshwater fish is found in fast-moving waters in the Amazon river basin.