juvenile: black & blue + 2 ocelli, D - brown border
pectoral 21-22 (20-23)
gill rakers 17-21
Images
Stegastes acapulcoensis (Fowler, 1944)
Acapulco damselfish
Body oval, robust, compressed; 1 pair of nostrils; margin of preopercle serrated; margin of bone under eye serrated, without notch it and the bone before it; mouth small, protrusible; teeth in single row, long and close-set; gill rakers 17-21; a single continuous dorsal fin, XII, 15 (rarely 16); anal rays II, 13; pectoral rays usually 21 or 22 (rarely 20 or 23); no projecting short spines at upper and lower base of tail fin; caudal fin bluntly forked; scales are moderately large and rough; body scaled, head largely scaled (snout scaled to nostrils), as are the basal parts of the median fins; lateral-line scales 20; lateral line incomplete, ends under end of dorsal fin base.
Grey-brown, lighter on head and anterior part of body, most of scales with blackish margin; white uppermost pectoral rays, a prominent white band across base of rays on outer face of pectoral-fin axil; juveniles bright blue with a prominent ocellus at the base of the soft dorsal fin and an ocellated black spot on the dorsal edge of the caudal peduncle.
Size: reaches a length of 18 cm.
Occurs along rocky shores.
Depth: about 1-16 m.
The central Gulf of California to Chile plus the Revillagigedos, Galapagos, Cocos and Malpelo.
