threadfish Meaning, Definition & Usage

  1. noun fish having greatly elongated front rays on dorsal and anal fins
    thread-fish; Alectis ciliaris.

WordNet

Thread"fish` noun
Definitions
  1. (Zoöl.) (a) The cutlass fish. (b) A carangoid fish (Caranx gallus, or C. crinitus) having the anterior rays of the soft dorsal and anal fins prolonged in the form of long threads.

Webster 1913