The Collaborative International Dictionary of English v.0.48:

Cigar fish \Cigar fish\, cigarfish \cigarfish\n. (Zool.)
   a small fusiform fish (Decapterus punctatus), allied to the
   mackerel, found in the West Atlantic and on the coast of the
   Gulf of Mexico.

   Syn: round scad, quiaquia, Decapterus punctatus.
        [1913 Webster + WordNet 1.5]

WordNet (r) 3.0 (2006):

Decapterus punctatus
    n 1: small fusiform fish of western Atlantic [syn: round scad,
         cigarfish, quiaquia, Decapterus punctatus]