Erethistes species lack a
thoracic adhesive apparatus, a smooth to granulate anterior margin on a strong
dorsal fin spine, a
papillate upper lip, and 8–12
anal fin rays. The
pectoral fin spine is
serrated anteriorly and posteriorly. The anterior margin of the pectoral fin spine either has serrations all pointing toward tip of spine; arranged in divergent pairs; or outwardly directed and not divergent. The head is large and broad with a conical snout. The body is robust rather than slender as in some other erethistid genera, and is moderately short and flattened. All
barbels are annulated with black rings. ==References==