Incidental catch

In fishing, incidental catch is that part of the catch which was not originally targeted, but was caught and retained anyway. It can be contrasted with discards, which is that part of the catch which was not originally targeted, but was caught and returned to the sea, and bycatch, which is for all the species caught apart from the targeted species.

Bycatch = Incidental catch + Discarded catch

The operational definitions used by the FAO for incidental catch and other related catches are as follows:^[1]

Target catch: The catch of a species or species assemblage which is primarily sought in a fishery, such as shrimp, flounders, cods
Incidental catch: Retained catch of non-targeted species
Discarded catch (usually shortened to discards): That portion of the catch returned to the sea as a result of economic, legal, or personal considerations.
Bycatch: Discarded catch plus incidental catch.

Notes

↑ Alverson DL, MH Freeberg, SA Murawski and Pope JG (1994) A global assessment of fisheries bycatch and discards FAO Fisheries, Technical paper 339, Rome. ISBN 92-5-103555-5.

References

Johnson, Douglas H; Shaffer, Terry L and Gould, Patrick J (1990) Incidental Catch of Marine Birds in the North Pacific High Seas Driftnet Fisheries U.S. Geological Survey.
Valdemarsen, John W Incidental catch of seabirds in longline fisheries UN Atlas of the Oceans: Fishery Technology Service.

Fisheries science and wild fisheries

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Fisheries management, sustainability and conservation

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Related issues	CalCOFI Fish slaughter Marine pollution Mercury in fish Shark finning Threatened sharks Threatened rays

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