Distinctive Characters: Dorsal fin with 10 spines and 14 or 15 rays. Anal fin with 3 spines and 8 rays. Pectoral fin with 15 or 16 rays. Body depth 2.4-2.8 in standard length. Body moderately deep. Dorsal profile of head steeply sloped. 5 or 6 scale rows on cheek. Scale rows horizontal below lateral line, but rising obliquely above it. Caudal fin slightly emarginate.
Colour: Yellow above, abruptly pale below, with 4 blue stripes. Fins yellow, but upper edge of pectorals rays dark. Dark dorsal spot sometimes present.
Habitat and Biology: Inhabits coral reefs, occurring on both shallow lagoons and on outer reef slopes to depths of at least 60 m. Forms large aggregations. Feeds on fishes, crustaceans and cephalopods.
Remarks: This common species could easily be confused with L. bengalensis. It can be distinguished from this and other bluestriped yellow snappers by fin, gill raker and stripe counts, and by the fact that only Lutjanus kasmira has dusky upper pectoral rays.