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.

Banded Archerfish

Archerfish are best known for their ability to precisely aim and shoot jets of water from their mouths to knock prey off of overhanging plants.

Bucktooth Tetra

The bucktooth tetra is small but fierce. Although only three inches long, it has earned a reputation as a predator that ranks alongside piranhas and freshwater barracudas.

Red-Bellied Piranha

Red-bellied piranhas are gray with pronounced black spots at birth and develop their signature red undersides as they reach adulthood.