1a mouth terminal or subterminal…….2
2a dorsal fin with less then 20 branched rays………3
3b no well-developed gelatinous or adipose eyelid………..5
5b no procumbent predorsal spine…….6
6b lips entire or only upper lip crenulated or fringed……..7
7b mouth smaller, maxillary not extending to vertical from anterior margin of eye……9
9b lateral line comlete…….11
11b head without sensory lines of pores, except in young……….12
12b lateral – line scales over 23; last simple dorsal rays osseous, smooth or denticulated……..13