Fish (such as salmon and steelhead) that hatch in freshwater, migrate to the ocean, mature there, and return to freshwater to spawn.

Pursuant to 16 USCS § 5002 (2), [Title 16. Conservation; Chapter 70. North Pacific Anadromous Stocks Convention] the term anadromous fish means “fish of the species listed in the Annex to the Conventi [..]

Fish that spent the majority of their life in the ocean but migrate via rivers into freshwater to spawn. Young develop in freshwater before returning to the marine environment as adults. Examples include salmon, shad, river herring, and striped bass.

Fish that spends most of their life feeding in the open ocean but that migrates to spawn in freshwater 

Fish (including most salmon) that hatch in freshwater, migrate to the ocean, mature there, and return to freshwater to spawn.  See also “resident fish.”

Species of fish that mature in the sea and migrate into streams to spawn.

Fish that spend their adult lives in salt water but must migrate to freshwater tributaries to spawn. For example, Atlantic sturgeon and American shad are both anadromous fish.

"Anadromous fish" includes but is not limited to salmon, as defined in ORS 506.016 (Salmon defined); roccus saxatilis, commonly known as striped bass; alosa sapidissima, commonly known as sh [..]

Anadromous fish means fish which spawn in fresh water and spend a portion of their lives in the ocean. (09 Oct 1997)

Fish that spend most of their lives in saltwater, but migrate into freshwater tributaries to reproduce (spawn).