eulachon

from The Collaborative International Dictionary of English v.0.48

Candlefish \Can"dle*fish`\, n. (Zool.)
   (a) 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) The beshow.
       [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Eulachon \Eu"la*chon\, n. [Native Indian name.] (Zo["o]l.)
   The candlefish. [Written also {oulachan}, {oolacan}, and
   {ulikon}.] See {Candlefish}.
   [1913 Webster]