needlefish

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various marine fishes of the family Belonidae, having slender bodies and long thin jaws with sharp teeth.
• noun Any of various other slender fishes, such as a pipefish or a sand lance.

from The Century Dictionary.

• noun A fish of the family Tylosuridæ, widely distributed.
• noun One of several different garfishes or bill-fishes; any belonid: so called from the sharp, slender snout. See Belonidæ and gar.
• noun A pipe-fish, Syngnathus acus, or other species of the genus or family Syngnathidæ. See Syngnathus.
• noun The agonoid fish Aspidophoroides monopterygius.
• noun Same as needle-shell.

from the GNU version of the Collaborative International Dictionary of English.

• noun The European great pipefish (Siphostoma acus or Syngnathus acus); -- called also earl, and tanglefish.
• noun The garfish.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Slender fish, in the family Belonidae, usually found in shallow marine habitats.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun fish with long tubular snout and slim body covered with bony plates
• noun elongate European surface-dwelling predacious fishes with long toothed jaws; abundant in coastal waters