~ Porcupine Fish ~
The Porcupine Fish is any of about 15 species of fishes commonly found near tropical reefs. Their stout bodies are covered by spines that are normally relaxed in larger species but permanently erect in smaller ones.
Porcupine fish range from 12 to 36 inches long. When threatened, the fish may swallow water or air and inflate its body into a bristling ball. Their skin is usually spotted. The porcupine fish is related to the puffer fish (Family Tetraodontidae of the order Tetraodontiformes).
The upper and lower teeth are each fused, producing a beaklike mouth used for feeding on coral and mollusks. Porcupine fishes make up the family Diodontidae of the order Tetraodontiformes. Their family name means two-toothed.