Monday, October 11, 2010

Porcupine Fish

Porcupine fish are about 15 species of Puffer related fishes that constitute the family Diodontidae and occur worldwide in shallow, tropical seas. When a porcupine fish is threatened it shallows water or air to inflate itself, producing a bristling ball of spines; in some smaller species, called burrfish, the spines are permanently erect.

Most species are about 30 cm (1 ft) long, but some many reach 90 cm (3 ft). The fused teeth form a break-line mouth, and the body is usually light colored with dark spots. The porcupine fish Diodon halocanthus, a feeder on small mollusk and in-fluted form.

Other fish:

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