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  • opercle - 2 flat points
    preopercle finely serrated
    D VIII-IX, I, 10-13, deeply notched
    top jaw expanded at rear
    small cónical teeth: jaws, roof of mouth, 2 rows on tongue
  • D VII-X + 0-I, 7-10
    rear top jaw bone exposed when mouth closed
    operculum: 1-2 flat points or several spines
    A II-III, 6-9
  • D deep notch, long base
    chin: +/- pores, knob, barbels
    notch at top corner operculum
    A I-II
    LL: to end C
  • D continuous
    closed mouth - rear of top jaw bone usually exposed
    roof of mouth - small teeth
    3 opercular spines
    A III