Head shield smooth anteriorly with a series of granules and rugae posteriorly. Adipose fin with a large black spot. Lateral line bifurcating at the base of tail. Gill rakers present on the hind aspect of all gill arches. Dorsal spine with a filament at its tip. Moderately deep caudal peduncle, 1.5 to 2.1 (mean 1.8) in its depth.