An anadromous fish spends part of its life in which environments?

An anadromous fish spends part of its life in which environments?

• A. Freshwater only
• B. Saltwater only
• C. Both freshwater and saltwater
• D. On land

Answer: (C)

Anadromous describes a life cycle where fish are born in freshwater, migrate to saltwater to grow, and return to freshwater to reproduce. This means they spend part of their lives in environments with low salinity and part in high salinity. For example, many salmon hatch in rivers, migrate to the ocean to mature, and then swim back upstream to spawn. This dual exposure is what makes the correct answer both freshwater and saltwater. It differs from fish that stay entirely in freshwater or entirely in the ocean.

Anadromous describes a life cycle where fish are born in freshwater, migrate to saltwater to grow, and return to freshwater to reproduce. This means they spend part of their lives in environments with low salinity and part in high salinity. For example, many salmon hatch in rivers, migrate to the ocean to mature, and then swim back upstream to spawn. This dual exposure is what makes the correct answer both freshwater and saltwater. It differs from fish that stay entirely in freshwater or entirely in the ocean.