There are currently 6 recognized species in this genus: •
Arcos decoris Briggs, 1969 (Elegant clingfish) •
Arcos erythrops D. S. Jordan &
C. H. Gilbert, 1882 (Rockwall clingfish) •
Arcos macrophthalmus Günther, 1861 (Padded clingfish) •
Arcos nudus Linnaeus,
1758 (Clingfish) •
Arcos poecilophthalmos Jenyns, 1842 (Galapagos clingfish) •
Arcos rhodospilus Günther, 1864 (Rock clingfish) ==References==