candlefish

noun, plural (especially collectively) can·dle·fish, (especially referring to two or more kinds or species) can·dle·fish·es.

1. Also called eulachon. a small, edible, smeltlike fish, Thaleichthys pacificus, of northwestern coastal waters of North America, being so oily that when dried it can be used as a candle.
2. sablefish.

noun plural -fish or -fishes

1. a salmonoid food fish, Thaleichthys pacificus, that occurs in the N Pacific and has oily fleshAlso called: eulachon