An elongated, laterally compressed fish with a pale bluish-gray body, often showing subtle iridescence. It is distinguished by two dark bands on the caudal fin and a characteristic longitudinal fold on the chin.

Have yellow head, to white front body and gradating to reddish brown rear body. Tail is dark brown and very long first dorsal fin. Solitary found in pairs and hover above reef and also can burrow on patches of sand or rubble. Size is up to 8 cm.

Pale bluish gray upper body and darker blue below, have 1-6 filament at the tail from adult. Solitary stay in pair and burrow in sand and rubble near reef. Size up to 12 cm.

Pale bluish to pinkish gray mostly have bluish stripes on head, narrow black bar on base of pectoral fin. It shelter in burrow on sand and rubble near reef. Size is up to 13 cm.