polyneme

from The Century Dictionary.

• noun A fish of the genus Polynemus.

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

• noun (Zoöl.) Any one of numerous species of tropical food fishes of the family Polynemidæ. They have several slender filaments, often very long, below the pectoral fin. Some of them yield isinglass of good quality. Called also threadfish.

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

• noun Any of several tropical foodfish, of family Polynemidae, that have long filaments below the pectoral fin; the threadfins