The Collaborative International Dictionary of English v.0.48:

Sea pike \Sea" pike`\ (Zool.)
   (a) The garfish.
   (b) A large serranoid food fish (Centropomus undecimalis)
       found on both coasts of America; -- called also robalo.
   (c) The merluce.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Snook \Snook\, n. [D. snoek.] (Zool.)
   (a) A large perchlike marine food fish (Centropomus
       undecimalis) found both on the Atlantic and Pacific
       coasts of tropical America; -- called also ravallia,
       and robalo.
   (b) The cobia.
   (c) The garfish.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Robalo \Rob"a*lo\, n. [Sp. r['o]balo.]
   Any of several pikelike marine fishes of the West Indies and
   tropical America constituting the family Oxylabracidae,
   esp. the largest species (Oxylabrax undecimalis, syn.
   Centropomus undecimalis), a valuable food fish called also
   snook, the smaller species being called

WordNet (r) 3.0 (2006):

robalo
    n 1: a kind of percoid fish