Comprehensive DescriptionRead full entry
| Common names: chromis (English), castañuela (Espanol) |
Chromis crusma (Valenciennes in Cuvier & Valenciennes, 1833)
Body deep, strongly compressed, back strongly arched; head large (31-34% of LS); snout short, blunt; 1 pair of nostrils; edge of bone under eye smooth; preopercle smooth or with occasional fine serrations; mouth short, protrusible, oblique, opens at front; teeth in 2 rows, outer conical, larger; gill rakers 31-37; a single continuous dorsal fin, XIII (rarely XIV), rear spines shorter than middle spines, 11-13; anal II, 12 (11-13); ends of soft dorsal and soft anal rounded; pectoral long (reaching past anal origin, 30-37% of LS) 19-21 rays; 2-3 short projecting spines at upper and lower base of tail fin; tail moderately forked, top lobe ~ head length; scales large and rough; 19-22 lateral line scales; body scaled, most of head scaled, basal parts of the median fins scaled; lateral line incomplete, ends under end of dorsal fin base.
Blue-grey above, shading to paler below; fins pale grey.
Size: reaches 19 cm.
Habitat: benthic on shallow rocky reefs.
Depth: 5-35 m?
Ecuador to Chile.