@flyfishery: Have you ever noticed these hidden features on a trout or salmon before? This spear like protrusion is located just above the pelvic fins and is known as the “axillary process” of the fish. All salmonids from the smallest grayling to the biggest taimen have these! #salmonidae #salmonid #salmon #trout #char #grayling #cisco #fish #fishing #fisheries #flyfishing #biology #fishbiology #Science #bio