Ichthyological field studies

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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: 4244px × 2829px
Location:
Photo credit: © Zoonar/Maximilian Buzun / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: activity, advanced, age, animal, breeding, catch, device, ecology, expedition, exploration, field, fish, fishery, fishing, fresh, goldfish, grayling, ichthyological, ichthyology, icthyological, identification, industrial, investigation, laboratory, meal, measurement, measuring, migration, pollution, population, predator, research, researches, river, salmo, samples, scaling, scandinavian, science, scientific, structure, studies, study, table, thymallus, tissue, trout, trutta, water, weighing, whitefish, wild, work