Ichthyological field studies
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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Keywords:
activityadvancedageanimalbreedingcatchdeviceecologyexpeditionexplorationfaunafieldfishfisheryfishingfreshgoldfishgraylingichthyologicalichthyologyicthyologicalidentificationindustrialinvestigationlaboratorymealmeasurementmeasuringmigrationoldpollutionpopulationpopulationspredatorresearchresearchesriversalmosamplesscalingscandinaviansciencescientificstructurestudiesstudytablethymallustissuetrouttruttawaterweighingwhitefishwildwork
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