Arcos (fish)Arcos is a genus of clingfishes.SpeciesThere are currently 6 recognized species in this genus:Arcos decoris Briggs, 1969 Arcos erythrops D. S. Jordan & C. H. Gilbert, 1882 Arcos macrophthalmus Günther, 1861 Arcos nudus Linnaeus, 1758 Arcos poecilophthalmos Jenyns, 1842 Arcos rhodospilus Günther, 1864