A freshwater fish found in Welsh lakes, similar to a whitefish, with silvery scales and small fins.
From Welsh gwyniad, meaning 'white fish,' derived from gwyn meaning 'white' and iâd meaning 'fish.' The term entered English scientific nomenclature in the 19th century when British naturalists catalogued Welsh fauna.
The gwyniad is so rare and localized to just a few Welsh lakes that it's considered a living fossil—its closest relatives live thousands of miles away in Siberia, suggesting these fish swam together during ice ages when the landscape looked completely different.
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