Fish Croaks Like a Frog, But Why?

Publication: National Geographic News   Date: November 7, 2005   View Article

With its staccato, drumlike call, the Atlantic croaker (Micropogonias undulatus) sounds more like a frog than a fish.

Abundant from Cape Cod to Mexico, the species belongs to a family of fish known as drums. The fish makes its namesake call by vibrating special muscles against its swim bladder.

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