Western Brook Lamprey
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Larval Lampetra spp.
Larval Tail Features to note:
> Caudal fin is clear or speckled along its ridge
> Caudal ridge is dark and uniform
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Pacific Lamprey
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Larval Pacific Lamprey
Larval tail features to note:
> Caudal fin is darkest near the ridge and fades toward the edge
> The caudal ridge is dark, except near the tip
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