Sockeye Salmon, also known as Red Salmon (Oncorhynchus nerka) spawning in an Alaskan stream during the summer. Two competing males are lurking nearby, one is visible at the right edge of the frame and the other, a jack or precocial male, is visible above the alpha male. As well, a Dolly Varden Charr (southern form; Salvelinus malma lordi) is lurking in the background next to fallen tree at the left.; Alaska, United States of America