Ichthyological field studies. Fish and device in old table. Weighing, measuring, scaling, taking tissue samples from river fish, study populations and

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Ichthyological field studies. Fish and device in old table. Weighing, measuring, scaling, taking tissue samples from river fish, study populations and pollution. Grayling (Th. thymallus). Scandinavia

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Size: 4589px × 3059px
Photo credit: © Maximilian Buzun / Alamy / Afripics
License: Royalty Free
Model Released: No

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