Species: Stegastes otophorus, Freshwater damselfish, Freshwater gregory

Stegastes otophorus (Poey, 1860)

Freshwater gregory

Body oblong, compressed; snout bluntly pointed; 1 pair of nostrils; margin of preopercle serrated; margin of bone under eye serrated, without notch between it and the bone before it; mouth small, protrusible, opens at front; teeth in single row, long and close-set incisors; 10-13 lower gill rakers; a single continuous dorsal fin, XII-XIII, 12-14; anal fin II, 12-14; dorsal and anal fins extend past tail fin base, with angular lobes; pectoral rays 17-19; no projecting short spines at upper and lower base of tail fin; lobes of tail fin bluntly rounded; scales are moderately large and rough; body scaled, head largely scaled (snout scaled to nostrils), basal parts of the median fins scaled; lateral line incomplete, ends under end of dorsal fin base; lateral-line scales 16-19.