Salmons include seven species of Pacific salmon and one species of Atlantic salmon. They’re found in tributaries of the Pacific and Atlantic Oceans, and most species are anadromous: They are born in streams and rivers, migrate out to the open sea, and then return to freshwater again to reproduce. 

Salmons have sleek, streamlined bodies that typically change color throughout their lifetimes. While in freshwater, Atlantic salmon are brown and spotted. When they migrate to the ocean, they turn silvery. Atlantic salmon are the largest salmon species, typically growing to just under four feet in length. 

Pacific salmon undergo significant transformations when returning to freshwater from the ocean: Some species go from silver to a deep maroon; others turn a deep black. Male