Atlantic salmon

The Atlantic salmon (Salmo salar) is an anadromous salmonid native to the North Atlantic and its rivers, from Norway, Iceland and Russia to eastern Canada and New England, with Baltic populations and a landlocked form. Adults reach 70–100 cm and 3–9 kg, exceptionally about 160 cm and 49 kg. Juveniles spend one to four years in fresh water before smolting; survivors return to natal rivers and mostly die after spawning, though roughly 5–10 percent repeat. Females deposit 4,000–8,000 eggs of 5–7 mm in gravel redds. The IUCN assessed the global population as Near Threatened in 2023.