POMACENTRIDAE Dascyllus aruanus (photo by Ukkrit Satapoomin) Dascyllus aruanus (Linnaeus, 1758) Humbug Dascyllus D XII, 11-13; A II, 11-13; P1 17-19; LLp 15-19. Body deep, compressed. Posterior margin of preopercle serrate. Suborbital scaled, with serrate ventral free margin. Teeth on jaws conical, muliserial; teeth of outermost row larger than those of inner rows. Caudal fin emarginage, with rounded lobes; two conspicuous projecting spinelike rays at upper and lower edges of caudal-fin base. Color: white with three broad black vertical bars on head and body; pelvic fin black; caudal fin whitish, subtranslucent. Size: 6.5 cm SL. Distribution: Indo-Pacific. Remarks: found around branching corals in lagoons and shallow protected bays; forming aggregation.