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  • very elongate; tail <1/3 TL
    tiny eye
    D very short: head & front body
    pink
    groove under snout
    front nostril tubular
  • dark above, grades to pale below
    LL pores no pale spots
    pectoral width 36-86% gill opening length
  • strongly bicolored: dark over light
    LL pores not in pale spots
    pectoral = minute, triangular flap with filament, base 17-33% gill opening
  • dark above, abruptly pale below
    LL pores: dark at front, in pale spots at rear
    pectoral base 36-37% gill opening
  • dark above fading to pale below
    pale spots above LL pores
    pectoral fin width 17-35% gill opening
  • no groove under snout
    D origin on head, low
    tail slightly < 1/2 TL
    nostrils: front = hole, rear in mouth
    teeth stout
    no pectorals
    gill openings under throat
  • very elongate
    no groove under overhanging snout
    D origin on head, before gill opening
    D & A reach near tail tip
    no C
    teeth between top jaws inconspicuous
    front nostril tubular, rear inside mouth
    gill openings vertical, wide apart below
    no pectorals
  • v elongate
    front nostril - short tube
    tail < 1/2TL, tip fleshy, blunt
    no pectorals
    gill opening low
  • v elongate, body depth 0.8-1% TL
    front nostril nontubular, in groove
    LL pores 186-189
    tail < 1/2 TL, tip fleshy, blunt
    front roof mouth - teeth 1 row
    no pectorals
    gill opening low
  • v elongate, body depth 1.1-1.2% TL
    front nostril nontubular, in groove
    LL pores 161-166
    tail < 1/2 TL, tip fleshy, blunt
    front roof mouth - 1 row teeth
    no pectorals
    gill opening low
  • v elongate
    front nostril non-tubular, in groove
    dark above, pale below
    tail < 1/2 TL, tip fleshy, blunt
    front roof mouth - 2 rows teeth
    no pectorals
    gill opening low
  • snout very pointed
    front nostril = hole
    D (only fin) high, origin on head
    brown + pale blotches, D white
    tail < 1/2 TL
    tip = hard, finless
    gill openings underneath