Seasonal migration undertaken by fish, usually as part of their life history, e.g. spawning run of gemfish; upstream migration of whitebait. Fishers may refer to increased catches as a 'run' of fish, a usage often independent of their migratory behavior. Comonwealth of Australia (1997)
RUN
Meaning of RUN in English
Fishery English glossary. Английский глоссарий рыболовства . 2012