Salvelinus willughbii
species of fish
Salvelinus willughbii, also known as the Windermere charr or Willoughby's charr, is a cold-water fish in the family Salmonidae. Its binomial species name commemorates Francis Willughby. They are remnants from the end of the last ice age, landlocked and isolated in various lakes within Cumbria, England. S. willughbii is a subspecies of Arctic charr that inhabit Lake Windermere, Coniston Water, Wast Water, Ennerdale Water, Buttermere, Crummock Water, and Loweswater in The Lake District of Cumbria, England. The species has been listed on the IUCN Red List as Critically Endangered due to increased water temperatures, decreased levels of oxygen and overfishing within Lake Windermere.
Description
In the autumn and winter months, Salvelinus willughbii possess long bodies with dark colouration on the top dorsal side, grey colouration near the medial line, and muddled pink colouration on ventral side with a white belly. Light pink spots run along the body above and slightly below the medial line. Both dorsal and caudal fins are dark along with muddled pink colouration of the pelvic, anal, and pectoral fins. The head is dark on the top portion and silver on the cheeks. In the spring and summer months, colouration lightens and the back turns from dark to blue or even olive in colour.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jun 23, 2026. The linked authority identifier is Q6418094. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Salvelinus willughbii” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.