If the mature fish re-enter rivers to spawn, they change in colour and appearance. Some populations of this fish only migrate to substantial lakes, and are "landlocked", paying their entire lives in freshwater. These types of populations are observed through the selection of the species. As opposed to Pacific species https://ketaminetreatmentsnearme49903.blogolenta.com/28711797/top-guidelines-of-wild-atlantic-salmon-for-sale