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  • snout: conical, overhanging, grooved underneath
    D origin behind gill opening
    tail < 1/2 TL, tip hard, blunt, no C
    jaws: teeth pointed, 1 row
    pectoral: base narrow, fin tiny
  • snout blunt
    eye large
    D: low, origin behind pectoral
    tail: < 1/2 TL, no C
    mouth long, opens at front
    conspicuous barbel behind front nostril
    pectoral minute, above gill opening
  • snout conical, rounded
    D origin on head
    tail: > 1/2 TL, tip hard, blunt,\finless
    teeth blunt
    pectoral: wide base
  • snout pointed, overhanging
    eye over center mouth
    D: origin over
    behind pectoral
    tail: > 1/2 TL, tip blunt, hard, finless
    mouth large
    pectoral moderate, base < gill opening
  • snout narrow
    D & A low
    D origin over/behind pectoral
    tail tip: hard, finless point
    teeth blunt
    pectoral base wide
    gill opening lateral
  • snout long, flat
    eye small, at front, on top
    D origin well behind pectoral
    tail: ~ 1/3 TL, tip hard & finless
    mouth large
    teeth long, pointed
    pectoral minute