The Collaborative International Dictionary
Polyneme
Polyneme \Pol"y*neme\, n. [Poly- + Gr. ? thread.] (Zo["o]l.) Any one of numerous species of tropical food fishes of the family Polynemid[ae]. They have several slender filaments, often very long, below the pectoral fin. Some of them yield isinglass of good quality. Called also threadfish.
Wiktionary
polyneme
n. Any of several tropical foodfish, of family ''Polynemidae'', that have long filaments below the pectoral fin; the threadfins