Tuna Ranching

Tuna ranching is a method of raising and harvesting wild tuna by temporarily catching them in large nets and then transferring them to open-ocean pens. In these pens, the tuna are fed and grown until they reach a suitable size for commercial sale. This practice allows fishers to catch mature tuna once, rather than repeatedly fishing, and reduces overfishing pressures on wild stocks. Tuna ranching is used in some regions to meet market demand while aiming to support sustainable fishing practices, although it requires careful management to prevent ecological impacts and ensure the health of the tuna populations.