Published online by Cambridge University Press: 11 May 2009
The capture of specimens of Crenilabrus bailloni Valenciennes, 1839 from Galway Bay, Republic of Ireland, and off the coast of Jersey, Channel Islands is reported. Occurrences of this species in northern European waters are discussed. It is concluded that this wrasse is a Lusitanian element in the northern fauna, and suggested that it may be more common in the fauna than records indicate due to its inhabiting a little collected habitat and on account of its similarity to the common corkwing wrasse C. melops (Linnaeus, 1758). Methods of distinguishing the two species are given.