Comprehensive DescriptionRead full entry
| Common names: chromis (English), damselfish (English), castañeta (Espanol), castañuela (Espanol) |
Chromis atrilobata Gill, 1862
Scissortail chromis, Scissortail damselfish
Body compressed, elongate, greatest body depth 2.3-3.7 in SL; 1 pair of nostrils; edge of bone under eye smooth; preopercle smooth or with occasional fine serrations; mouth small, protrusible, opens at front; teeth in 2 rows, outer conical, larger; lower gill rakers 20-23; a single continuous dorsal fin, XII, 12-13; anal rays II, 10-12; pectoral rays 18-19; 2-3 short projecting spines at upper and lower base of tail fin; caudal fin forked, with sharp tips; scales large and rough; 20-21 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.
Metallic grey with prominent white spot just below base of soft dorsal fin; each caudal fin lobe with intensely blackish streak, a blackish mark at base of pectoral fin.
Size: attains 13 cm.
A common species that forms large aggregations around rocky reefs.
Depth: 1-80 m.
Central Baja and the Gulf of California to northern Peru, and all the offshore islands except Clipperton.