Cornetfishes

The cornetfishes or flutemouths are a small family, the Fistulariidae, of extremely elongated fish in the order Syngnathiformes. The family consists of a single genus, Fistularia, with four species, found worldwide in tropical and subtropical marine environments.

Ranging up to 2 m (6.6 ft) in length, cornetfishes are as thin and elongated as many eels, but are distinguished by very long snouts, distinct dorsal and anal fins, and forked caudal fins whose center rays form a lengthy filament. The lateral line is well-developed and extends onto the caudal filament.