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Porcupinefishes or balloonfishes are any of the various species of the genus Diodon, the type genus of Diodontidae.

Distinguishing features

Fish of the genus Diodon have:
* two-rooted, movable spines (which are derived from modified scales) distributed over their bodies.
* beak-like jaws, used to crush their hard-shelled prey (crustaceans and molluscs).They

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