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⭐ Core Definition: By-catch

Bycatch (or by-catch), in the fishing industry, is a fish or other marine species that is caught unintentionally while fishing for specific species or sizes of wildlife. Bycatch is either the wrong species, the wrong sex, or is undersized or juveniles of the target species. The term "bycatch" is also sometimes used for untargeted catch in other forms of animal harvesting or collecting. Non-marine species (freshwater fish not saltwater fish) that are caught (either intentionally or unintentionally) but regarded as generally "undesirable" are referred to as rough fish (mainly US) or coarse fish (mainly UK).

In 1997, the Organisation for Economic Co-operation and Development (OECD) defined bycatch as "total fishing mortality, excluding that accounted directly by the retained catch of target species". Bycatch contributes to fishery decline and is a mechanism of overfishing for unintentional catch.

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👉 By-catch in the context of Spearfishing

Spearfishing is the practice of fishing using handheld, elongated sharp-pointed tools, such as a spears, gigs, and harpoons. It was one of the earliest fishing techniques used by mankind, and has been deployed in artisanal fishing throughout the world for millennia.

Early civilizations were familiar with the custom of spearing fish from rivers and streams using sharpened sticks. Modern spearfishing usually involves the use of underwater swimming gear and slingshot-like elastic spearguns or compressed gas powered pneumatic spearguns, which launch a tethered dart-like projectile to strike the target fish. Specialised techniques and equipment have been developed for various types of aquatic environments and target fish. Spearfishing uses no bait and is highly selective, with no by-catch, but inflicts lethal injury to the fish and thus precludes catch and release.

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⭐ Core Definition: By-catch
👉 By-catch in the context of Spearfishing
By-catch in the context of Fishing in the North Sea

By-catch in the context of Fishing in the North Sea

Fishing in the North Sea is concentrated in the southern part of the coastal waters. The main method of fishing is trawling.

Annual catches grew each year until the 1980s, when a high point of more than 3 million metric tons (3.3 million S/T) was reached. Since then, the numbers have fallen back to around 2.3 million tons (2.5 million S/T) annually with considerable differences between years. Besides the fish caught, it is estimated that 150,000 metric tons (165,000 S/T) of unmarketable by-catch are caught and around 85,000 metric tons (94,000 S/T) of dead and injured invertebrates.

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By-catch in the context of "Spearfishing"

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⭐ Core Definition: By-catch

👉 By-catch in the context of Spearfishing

By-catch in the context of Fishing in the North Sea