Fish with long tubular snout and slim body covered with bony plates; SYN. needlefish.
Any of various long-snouted, thin, pipelike marine fishes in the same family (Syngnathidae) as seahorses. The great pipefish Syngnathus acus grows up to 50 cm/1.6 ft, and the male has a brood pouch for eggs and developing young.