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Target species Those species that are the main subject of fishing effort in a fishery. The tropical‑tuna fisheries, depending on their fishing strategy, target skipjack, yellowfin and/or bigeye tuna; while the fisheries that cover temperate waters also target bluefin and albacore species. Considerations such as…

Shark finning A fishing practice that consists in removing the fins from sharks and discarding the bodies back to the ocean. This practice has been banned in some countries, where it is mandatory to land the whole sharks with their fins naturally attached, as a…

Non‑target species Species that are incidentally captured while fishing for a target species. In tropical tuna fishing, these generally include minor tuna species (bullet and frigate tunas, Pacific black skipjack, little tunny), other bony fishes (mahi‑mahi, rainbow runner, billfishes), sharks, rays, turtles, etc. Some of…

Finfish Term used to describe the strictly classified biological group of fishes, sometimes called true fishes to distinguish them from other aquatic life whose common names also end in “fish”, including mollusks (e.g., cuttlefish), crustaceans (e.g., crayfish), echinoderms (e.g., starfish), and other animals (e.g., jellyfish);…

Bycatch mitigation Mitigation measures for tuna fisheries intended to reduce catches of non‑target species including seabirds, sea turtles, marine mammals, sharks, and rays. They include changes in gear designs and fishing methods to avoid catching bycatch, along with techniques to release bycatch species when caught.

Bycatch Any fish or other marine species — such as sharks, dolphins, marine turtles, and seabirds — that is not the main objective or the target of a fishing fleet and are caught unintentionally while fishing, whether retained or discarded. See also Byproduct and Discard….