Source : Webster's Revised Unabridged Dictionary (1913)

Sandfish \Sand"fish`\, n. (Zo["o]l.)
   A small marine fish of the Pacific coast of North America
   ({Trichodon trichodon}) which buries itself in the sand.

Source : WordNet®

sandfish
     n 1: either of two small silvery scaleless fishes of the northern
          Pacific that burrow into sand
     2: fish of sandy areas of western Pacific and Indian oceans
        having an angular snout for burrowing into sand [syn: {beaked
        salmon}, {Gonorhynchus gonorhynchus}]