Source : Webster's Revised Unabridged Dictionary (1913)

Lance fish \Lance" fish`\ (Zo["o]l.)
   A slender marine fish of the genus {Ammodytes}, especially
   {Ammodytes tobianus} of the English coast; -- called also
   {sand lance}.

Source : WordNet®

sand lance
     n : very small silvery eellike schooling fishes that burrow into
         sandy beaches [syn: {sand launce}, {sand eel}, {launce}]