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  • top jaw - central notch
    nape - ridge of 2 rows large scales
    belly - row scutes
    pelvics I,6
    scales rough
  • top jaw - central notch
    nape - no large scales
    belly - row scutes
    pelvics I, 8
    scales smooth
  • body deep, very compressed
    upper & lower body profiles convex
    D origin before A origin
    adipose D present
    C forked, naked
    end of tail base: rhomboidal black blotch
    premaxilla teeth - 2 rows, inner row 5 teeth, none external
    maxilla teeth: 3 points, center point large, robust
    A < 42
    scales large, smooth
  • notch between top jaws
    D last ray filamentous
    belly - row scutes
    pelvic I,7
    A long base