What is "threadfish"

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.

n. 1 The cutlassfish. 2 A carangoid fish ((taxlink Caranx gallus species noshow=1) or (taxlink Caranx crinitus species noshow=1)) having the anterior rays of the soft dorsal and anal fins prolonged in the form of long threads.

n. fish having greatly elongated front rays on dorsal and anal fins [syn: thread-fish, Alectis ciliaris]