blueback

English

Etymology

From blue +‎ back.

Noun

blueback (plural bluebacks)

1. Any of several fish
   1. A lake trout (Salmo oquassa).
   2. A salmon (Oncorhynchus nerka).
   3. A blueback herring or blueback shad (Alosa aestivalis, syn. Clupea aestivalis) similar to the alewife
   4. A Beardslee trout (Oncorhynchus mykiss irideus f. beardsleei).