-
very elongate; tail <1/3 TL
tiny eyeD very short: head & front bodygroove under snout
front nostril tubular -
very elongate
groove under snoutD origin on headtail slightly < 1/2 TL, tip hardnostrils: front tubular, rear in mouth
roof mouth - 2 rows teethteeth between top jaws exposedgill openings low on side
pectoral = tiny flap -
snout pointed, overhanging, grooved belowD: high, origin on napetail < 40% TL, tip hard & finlessfront nostril tubulargill openings underneath
no pectorals -
no groove under snoutD origin on head, lowtail slightly < 1/2 TLnostrils: front = hole, rear in mouth
teeth stoutno pectorals
gill openings under throat -
very elongate
no groove under overhanging snoutD origin on head, before gill openingD & A reach near tail tip
no Cteeth between top jaws inconspicuous
front nostril tubular, rear inside mouthgill openings vertical, wide apart below
no pectorals -
v elongateD origin on headtail <1/2 TL, tip fleshy, bluntgroove under snout
teeth protrude between top jawsno pectorals
gill opening low