Blueback

from The Collaborative International Dictionary of English v.0.48

Nerka \Ner"ka\, n. [Russ. niarka, prob. fr. native name.]
   (Zool.)
   The most important salmon of Alaska ({Oncorhinchus nerka}),
   ascending in spring most rivers and lakes from Alaska to
   Oregon, Washington, and Idaho; -- called also {red salmon},
   {redfish}, {blueback}, and {sawqui}.
   [Webster 1913 Suppl.]

from The Collaborative International Dictionary of English v.0.48

Blueback \Blue"back`\, n. (Zool.)
   (a) A trout ({Salmo oquassa}) inhabiting some of the lakes of
       Maine.
   (b) A salmon ({Oncorhynchus nerka}) of the Columbia River and
       northward.
   (c) An American river herring ({Clupea [ae]stivalis}),
       closely allied to the alewife.
       [1913 Webster]

[email protected]