Webster's Revised Unabridged Dictionary · 1913

Candlefish

Candlefish (#) , noun

(a)
(Zoology) 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
(b)
(Zoology) The beshow.