How long does it take for a salmon to become an adult?

Salmon generally take about 2 to 7 years to reach adulthood, depending on the species and environmental conditions. For example, Atlantic salmon typically mature in about 2 to 3 years, while some Pacific salmon species may take 4 to 5 years. Factors such as water temperature, food availability, and habitat can influence their growth rates. After reaching maturity, adult salmon return to their spawning grounds to reproduce.