The Collaborative International Dictionary of English v.0.48:
Matajuelo \Ma`ta*jue"lo\ (m[aum]`t[.a]*hw[=a]"l[=o]; 239), n. [Cf. Sp. matajud['i]o a kind of fish.] A large squirrel fish (Holocentrus ascensionis) of Florida and the West Indies. [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
Holocentrus ascensionis n 1: bright red fish of West Indies and Bermuda