threadfish n 1: fish having greatly elongated front rays on dorsal and anal fins [syn: {threadfish}, {thread-fish}, {Alectis ciliaris}]
Polyneme \Pol"y*neme\, n. [Poly- + Gr. ? thread.] (Zool.) 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}. [1913 Webster]
Threadfish \Thread"fish`\, n. (Zool.) (a) The cutlass fish. (b) A carangoid fish ({Caranx gallus}, or {Caranx crinitus}) having the anterior rays of the soft dorsal and anal fins prolonged in the form of long threads. [1913 Webster]