bycatch noun 2verb 1forms 3 noun2 •Any fish (or other creatures) that are not targeted as a catch but are unintentionally caught, and often discarded back into the sea.Some offer him bags of bycatch—fish too small or net-mangled to sell, rays and seahorses few will want, and so on. — 2022 •Any person, animal, or thing, captured unintentionally on camera or film. verb1 •To catch unintentionally while fishing for something else. formsbycaught · bycatching · bycatches