The arapaima (Arapaima gigas) is one of the largest tropical freshwater fish in the world.
Banded archerfish (Toxotes jaculatrix) capture their prey by aiming and spitting water into the air.
The blacktip reef shark (Carcharhinus melanopterus) inhabits tropical and warm temperate seas.
The blind cavefish lives in deep, dark underwater caves.
The brook trout (Salvelinus fontinalis) is the state fish for Pennsylvania.
Caribbean staghorn coral (Acropora cervicornis) live in colonies.
The electric eel (Electrophorus electricus) is an electrical fish.
The Gentoo Penguin (Pygoscelis papua) is easily recognized by the wide white stripe.
The giant Pacific octopus (Enteroctopus dofleini) is largest octopus species in the world.
The glass catfish (Kryptopterus minor) is a transparent freshwater fish.
The greenside darter fish (Etheostoma blennioides) is a member of the Percidae family.
The King penguin (Aptenodytes patagonicus) is the second largest species of penguin.
The leafy sea dragon (Phycodurus eques) is a marine fish related to the seahorse.
The longnose gar (Lepisosteus osseous) is a primitive ray-finned fish.
The macaroni penguin (Eudyptes chrysolophus) is one of six species of crested penguin.
The pot-bellied seahorse (Hippocampus abdominalis) is one of the largest seahorses.
The red discus (Symphysodon discus) is a freshwater fish with a nearly circular, or disc shaped, body.
The Red-bellied piranha (Pygocentrus nattereri) has perhaps the worst reputation of any freshwater fish.
The red-tail catfish (Phractocephalus hemioliopterus) is a freshwater pimelodid, meaning long-whiskered fish.
The spotted spiny lobster (Panulirus guttatus) is also known as the Guinea chick lobster.
The Weedy seadragon (Phyllopteryx taeniolatus) is a marine fish related to the seahorse.
The West Coast sea nettle (chrysaora fuscescens) is a type of jellyfish that lives in the Pacific Ocean.
The white-blotched river stingray (Potamotrygon leopoldi) is a bottom-dwelling, freshwater stingray.
The yellow spotted Amazon turtle (Podocnemis unifilis) is one of the largest species of South American river turtle.
Yellow stingrays (Urobatis jamaicensis) are also known as yellow-spotted stingrays.
The zebra shark (Stegostoma fasciatum) is a species of carpet shark.