Knowra Catch and release Catch and release Catch and release is a fishing practice in which anglers return captured fish to the water instead of keeping them. Its conservation value depends on whether released fish survive and reproduce.
Fish physiology : The study of how fish bodies function, including their responses to stress, injury, and changes in water conditions. Physiological stress helps explain why capture and handling can harm released fish.
Recreational fishing : Fishing undertaken primarily for leisure, sport, or personal consumption rather than commercial sale. Catch and release is widely used in recreational fisheries.
Catch-and-release mortality : The death of fish after they are released, caused by capture-related injury, stress, or other effects. Delayed deaths can reduce the conservation benefit of releasing fish.
Catch and keep : A fishing practice in which captured fish are retained for food, sale, or another use. It contrasts with releasing captured fish and can remove them directly from the population.
Barotrauma : Injury caused by rapid pressure change, which can expand gases in a fish’s swim bladder and affect other organs. Fish caught deep underwater may suffer pressure injuries during rapid ascent.
Trophy fishing : Fishing that focuses on catching unusually large or notable fish, often for recognition or competition. Releasing trophy-sized fish can preserve large breeding individuals.
Post-release survival : The proportion of captured animals that remain alive after being returned to their habitat. Survival rates show whether release practices achieve their intended benefit.
Size limit : A fishing regulation that restricts the sizes of fish that may be kept or harvested. Size limits often require undersized or oversized fish to be released.
Hooking injury : Physical damage caused when a fishing hook penetrates a fish’s mouth, throat, or other tissue. Hook location and injury severity influence the chances of survival after release.
Fly fishing : A fishing method that uses an artificial fly and a weighted or specialized line to present it to fish. Many fly-fishing traditions emphasize releasing captured fish.
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