Batfish

from WordNet (r) 3.0 (2006)

batfish
    n 1: bottom-dweller of warm western Atlantic coastal waters
         having a flattened scaleless body that crawls about on
         fleshy pectoral and pelvic fins

from The Collaborative International Dictionary of English v.0.48

Batfish \Bat"fish`\, n. (Zool.)
   A name given to several species of fishes:
   (a) The {Malthe vespertilio} of the Atlantic coast.
   (b) The flying gurnard of the Atlantic ({Cephalacanthus
       spinarella}).
   (c) The California batfish or sting ray ({Myliobatis
       Californicus}.)
       [1913 Webster]