-
oval, v compressed
slender tubular snoutD at rear, 2nd spine v large, serratedflank - bony plates over pectoralscales - ridged & spiny -
deep body, v compressed, both profiles convex
head - radiating bony ridges; nape crestD VIII-IX (III longest), 26-37mouth small, oblique, protrusibleA II-III (I longest) similar to Dscales: edges keel + teeth