Neopomacentrus cyanomos at Cayo Arcas, July 2013 (Photo HP-E); 11 N. cyanomos are visible, and can be identified by the presence of a black blotch on the shoulder, and a large white blotch on the rear edge of the dorsal fin; a single Chromis multilineata (without the shoulder- and dorsal-fin blotches) is present in the foreground immediately above the brain coral.