Fishing or to fish means any activity that does, is intended to, or can reasonably be expected to result in catching or removing from the water fishery resources. Fishing also includes the acts of scouting, processing, and support.
50 CFR § 300.151
In addition to the terms defined in 300.2 and those in the Magnuson-Stevens Act, the terms used in this subpart have the following meanings. If a term is defined differently in 300.2 or the Magnuson-Stevens Act, the definition in this section shall apply.