D1 VIII/42; D2 absent; P1 24; P2 absent; A V/38. Color of back grey, merging to silvery white towards belly; very small black dots all over body. Dorsal, anal and caudal fins with dark edges and all fins faintly yellow. Body very deep and compressed. Eye with feeble adipose lid. Teeth small in a single row in both jaws. Single dorsal fin, falcate; anal fin falcate; median fins preceded by a series of 5 to 10 blade-like spines with anterior and posterior points. No pelvic fins. Caudal fin deeply forked, the lower lobe longer.