Pink salmon (Oncorhynchus gorbuscha) probes her redd while her alpha male guards in an Alaska stream during summer.

Pink Salmon (Oncorhynchus gorbuscha) spawning pair in an intertidal stream that is a tributary of Prince William Sound, Southcentral Alaska

Pink and Chum salmon (Oncorhynchus gorbuscha and O. keta) summer spawning migration in a tributary of Prince William Sound, Alaska.

Pink Salmon (Oncorhynchus gorbuscha) churn up the water there at the fish weir at the fish hatchery at Allison Point outside of Valdez; Alaska, United States of America

Pink and Chum salmon (Oncorhynchus gorbuscha and O. keta) summer spawning migration in a tributary of Prince William Sound, Alaska.

Pink and Chum salmon (Oncorhynchus gorbuscha and O. keta) summer spawning migration in a tributary of Prince William Sound, Alaska.

Pink and Chum salmon (Oncorhynchus gorbuscha and O. keta) summer spawning migration in a tributary of Prince William Sound, Alaska.

Animals

Animals

Underwater view of a pink salmon (Oncorhynchus gorbuscha) spawning pair with an aggressive sneaker male gaping in Hartney Creek near Cordova, Alaska in the summer; Alaska, United States of America

Male Pink Salmon (Oncorhynchus gorbuscha) using the gape threat to oust an alpha competitor while a small sneaker male approaches along the opposite side of the female in an intertidal stream that is a tributary of Prince William Sound, Alaska

Two hook-nose alpha male Coho Salmon (Oncorhynchus kisutch) contenders competing to spawn with adjacent female that is hovering over her under-construction redd in an Alaskan stream in autumn; Alaska, United States of America

Alaska, Sitka, Pink Salmon (Oncorhynchus Gorbuscha) Swimming Up The Indian River To Spawn.