by-catch(redirected from By catch)
Also found in: Thesaurus.
The portion of a fishing catch that is discarded as unwanted or commercially unusable.
(Fishing) unwanted fish and other sea animals caught in a fishing net along with the desired kind of fish
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|Noun||1.||by-catch - unwanted marine creatures that are caught in the nets while fishing for another species; "thousands of dolphins and porpoises and whales are killed as part of the by-catch each year"|