noun.
The blunt-headed or blue-headed wrasse, a fish of the species Thalassoma amblycephalum or Thalassoma bifasciatum.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
small Atlantic wrasse the male of which has a brilliant blue head
Word Usage
"The creek is home to a pair of native species of fish, the bluehead and flannel-mouthed suckers, and possibly the round-tailed chub, although the presence of the latter never has been confirmed, White said."