Redfin (Perca fluviatilis)
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| Redfin (Perca fluviatilis) | |
|---|---|
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| Name | Redfin |
| Genus | Perca |
| Species | P. fluviatilis |
| Authority | Linnaeus, 1758 |
Redfin (Perca fluviatilis) is a freshwater percid fish widely known across Eurasia and introduced elsewhere. It is notable for its ecological role in lacustrine and lotic systems and for its importance to recreational angling, commercial fisheries, and aquaculture policy. The species has been the subject of studies by institutions and researchers across Europe and Asia and figures in management discussions involving transboundary water bodies.
Taxonomy and nomenclature
Perca fluviatilis was described by Carl Linnaeus and placed in the genus Perca along with congeners recognized by taxonomists at the Natural History Museum and comparable museums in Stockholm, London, and Paris. Taxonomic treatments by the International Commission on Zoological Nomenclature, the Zoological Society of London, and the Russian Academy of Sciences reference Linnaean binomial nomenclature in comparative works alongside treatments in the Journal of Fish Biology and publications from the British Museum. Nomenclatural synonymies appear in faunal compilations from the Royal Society and the Linnean Society. Regional checklists maintained by the Food and Agriculture Organization, the European Commission, and the Ministry of Agriculture of China include standardized common names used by angling clubs such as the English Anglers' Alliance and the Deutscher Angelfischerverband.
Description and morphology
The morphology of the species has been illustrated in guides from the Royal Entomological Society and illustrated monographs produced by Cambridge University Press and Oxford University Press. Adult specimens show laterally compressed bodies with distinctive dorsal fin separation noted in keys by the Smithsonian Institution and the American Fisheries Society. Coloration and meristic counts are documented in tomes from the University of Copenhagen, the Natural History Museum, and the National Museum of Natural History in Paris. Comparative anatomy studies published by the Max Planck Society and the Helmholtz Centre describe fin ray counts and scale patterns, while functional morphology analyses from the University of Helsinki and the University of Bergen examine jaw mechanics and pectoral fin articulation. Descriptions in guides by the British Museum, the Field Studies Council, and the World Wildlife Fund align with illustrations used by angling federations in Germany, Sweden, and Poland.
Distribution and habitat
Range maps in atlases from the British Trust for Ornithology and the Russian Geographical Society show native distribution across Europe and northern Asia, with introductions recorded in North America, Australia, and New Zealand in reports by the US Geological Survey, Fisheries and Oceans Canada, the Australian Government Department of Agriculture, Water and the Environment, and the New Zealand Ministry for Primary Industries. Occurrence records appear in the Global Biodiversity Information Facility, museum collections at the Natural History Museum, and surveys conducted by universities including Uppsala University and the University of Edinburgh. Habitats include lakes, rivers, reservoirs, and floodplain wetlands documented in conservation assessments by the IUCN, Ramsar Convention dossiers, and regional environmental agencies such as the Environment Agency (England) and the Swedish Environmental Protection Agency. Studies by the European Environment Agency and research groups at Wageningen University evaluate responses to eutrophication and hydrological alteration.
Feeding and behaviour
Dietary studies published in the Journal of Applied Ecology and Marine Biology demonstrate piscivory, invertebrate predation, and ontogenetic shifts described in theses from the University of Warsaw and Monash University. Behavioral ecology investigations by the Max Planck Institute for Ornithology and the Leibniz Institute address shoaling, territoriality, and diel activity patterns, while tagging studies coordinated by the British Trust for Ornithology analogues and telemetry projects by the Scottish Association for Marine Science provide movement data. Predation interactions with species documented by the Norwegian Institute for Nature Research, the Polish Academy of Sciences, and the Hungarian Natural History Museum figure in ecosystem models used by the European Commission and the United Nations Environment Programme.
Reproduction and lifecycle
Reproductive biology and spawning phenology are detailed in regional guides from the Finnish Environment Institute and the Estonian Marine Institute, with seasonal timing reported in monographs by the Zoological Society of London and research articles from the University of Leeds and the University of Glasgow. Larval development stages and otolith microstructure analyses have been published in journals associated with the Royal Society and the American Fisheries Society. Lifecycle summaries appear in management plans by the Environment Agency (England), the Agency for Nature and Forests (Belgium), and the Norwegian Directorate for Nature Management, while captive breeding protocols have been developed by aquaculture programs at Wageningen University and the Institute of Aquaculture, University of Stirling.
Fisheries, aquaculture, and human use
The species is targeted by recreational anglers affiliated with organizations such as the Angling Trust, Deutscher Angelfischerverband, and regional federations in Poland, Russia, and Sweden, and it supports small-scale commercial fisheries in parts of Europe and Asia documented in FAO reports. Aquaculture trials and polyculture experiments have been conducted by institutes including the Institute of Aquaculture (Stirling), Shanghai Ocean University, and the Norwegian Institute of Marine Research. Market presence appears in seafood supply studies compiled by the Food and Agriculture Organization, trade analyses by the European Commission, and local fisheries departments in the Netherlands, Germany, and Italy. Cultural references and angling literature citing the species appear in works associated with the Royal Society of Literature and sporting publications linked to the BBC and RAI.
Conservation and threats
Conservation status and threat assessments are addressed in syntheses by the IUCN, the European Commission, and national bodies such as the Swedish Environmental Protection Agency and the Finnish Environment Institute. Threats including habitat modification, invasive species interactions reported by the US Geological Survey and the Australian Government, and water quality changes documented by the European Environment Agency and the Environment Agency (England) influence management actions. Recovery and management measures are discussed in policy documents produced by the Ramsar Convention, the Convention on Biological Diversity, and regional fisheries management organizations, with monitoring programs run by universities such as the University of Copenhagen and research institutes including the Helmholtz Centre and the Institute of Fisheries in Poland.