blueback

== English == === Etymology === From blue +‎ back. === Noun === blueback (plural bluebacks) Any of several fish: A lake trout (Salmo oquassa). A salmon (Oncorhynchus nerka). A blueback herring or blueback shad (Alosa aestivalis, syn. Clupea aestivalis) similar to the alewife. A Beardslee trout (Oncorhynchus mykiss irideus f. beardsleei). The blueback salmon ==== Further reading ==== blueback on Wikipedia.Wikipedia