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forehead: sloping or concaveD VIII + I, 8-11, well separatedscales large, roughlower jaw strongly protrudingA: III largeLL: to end tail fin
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D VII-X + 0-I, 7-10rear top jaw bone exposed when mouth closedoperculum: 1-2 flat points or several spinesA II-III, 6-9
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D deep notch, long basechin: +/- pores, knob, barbelsnotch at top corner operculumA I-II
LL: to end C -
D continuousclosed mouth - rear of top jaw bone usually exposedroof of mouth - small teeth3 opercular spines
A III