Plural of char; multiple fish of the genus Salvelinus, which includes Arctic char and other cold-water fish species related to salmon and trout.
From Old Norse kerja. The char fish were named by Scandinavian peoples who caught them in cold northern waters. The word is Old English in origin and relates to the fish's spotted coloring.
Arctic char are remarkable fish that can survive in the coldest freshwater environments on Earth—some populations spend their entire lives in remote glacial lakes, making them evolutionarily adapted to extreme conditions.
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