Stock depletion of yellowfin tuna Thunnus albacares (Bonnaterre 1788) in the Northeastern Indian Ocean

The stock of yellowfin tuna ( Thunnus albacares ) has been in a declining trend the last five years. Although noticeable decline mainly occurred western part Indian Ocean, uncertainty lingers on how this phenomenon will affect opposite leg. study aimed to investigate dynamics through monitoring several indicators by utilizing logbooks, scientific port sampling, and observer data available. result showed that both relative abundance estimated catch are recent years, sign negative global inclination also influences Indonesian longline fisheries. Further studies needed understand whether impacts other gears. Hence, mitigation conserving resource reducing strengthening collection should be priority maintain livelihood welfare many coastal communities.