Eel-like, shallow body depth; 1 to several symphyseal fangs on dentary and premaxilla; lacking cardiform teeth, pelvic fins, and swim bladder rocker bone; a patch of ridges posteriorly on the ventral surface of the swim bladder (Ref. 34024). 39-43 anal fin rays in front of vertical through back of 30th vertebrae; 11-12 anal fin rays in front of vertical through dorsal fin origin (Ref. 34024).