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snout 57-65% head
front eye to gill cover edge > 2/3 snout lengthtop head - large dark oblong blotchesWITH small bony plates under throat -
snout 79-83% head length, very narrowtop head +/- small round blotchesWITH small bony plates under throat
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snout short & broad, < 75% head
front eye to gill cover edge < 2/3 snout lengthtop head: large oblong dark blotchesNO small bony plates under throat