Elops saurus

from WordNet (r) 3.0 (2006)

Elops saurus
    n 1: game fish resembling the tarpon but smaller [syn:
         {ladyfish}, {tenpounder}, {Elops saurus}]

from The Collaborative International Dictionary of English v.0.48

Ten-pounder \Ten"-pound`er\, n. (Zool.)
   A large oceanic fish ({Elops saurus}) found in the tropical
   parts of all the oceans. It is used chiefly for bait.
   [1913 Webster]