noun
A cold-water fish (Salvelinus alpinus). The Japanese name literally means 'Alps char'.
See also: 北極岩魚 (ほっきょくいわな)
アルプスイワナは北極圏の湖に生息している。
Arctic char live in lakes in the Arctic region.
Synonym also meaning arctic char; 北極岩魚 is a less common alternative name.
Compound of アルプス (Alps) + イワナ (char, a type of trout). The name likely refers to the fish's habitat in alpine or cold mountainous regions.