Candlefish n. : A marine fish (Thaleichthys Pacificus), allied to the smelt, found on the north Pacific coast; -- called also eulachon. It is so oily that, when dried, it may be used as a candle, by drawing a wick through it

Candlefish n. : The beshow.

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Taxonomy
eulachon, species, Thaleichthys pacificus, females, NMFS, free encyclopedia, candlefish, stream, fish, hooligan, the Pacific coast, ocean fish, language, fins, adult, feed, plankton, diet.

Defination from the web:
candlefish, is a small anadromous ocean fish, Thaleichthys pacificus, a smelt found along the Pacific coast of North America ... The name "candlefish" derives from the fact that it is so fat during spawning, with up to 15% of total body weight in fat, that ...