The blue and yellow damselfish Chromis limbaughi is a species protected by the Mexican federal government due to its commercial relevance as an aquarium fish. In this paper we present new records of the species at 17 locations north of its accepted northernmost distribution limit. Because of the abundance, relative occurrence, and the presence of adults and juveniles in the new sites, these might represent reproductive populations. It is probable that the species has settled successfully there in recent years by taking advantage of the warming of the region reported in the last decade.
