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snout short ( < eye), bluntD: origin over center pectoral
D & A rays not segmentedtail ~60% of TL
D & A join C, tail tip rigidboth lips - large folds, upper high & covers divided hollowpectoral base extends above gill opening -
snout long, overhanging , with ventral keel
rear nostril: hole before mid-eyeD: origin slightly behind pectoral base
D & A rays segmentedtail: ~ 60% TL, tip stiff, small Cjaw teeth in bands, long patch on central roof of mouthpectoral base extends above top of gill opening -
D origin behind pectoral base
D & A rays not segmentedtail < 60% TL, tip stifftop lip flange wide
outer teeth form cutting edgehollow hidden by top lip flange is not dividedpectoral base within limits of gill opening -
snout large, conical, overhangs exposed toot patchD & A rays segmentedtail > 2/3 TL, slender, pointed