The harvest and slaughter of farmed tilapia involves welfare challenges at every step. Understanding what happens and which methods are more humane helps advocates push for better standards.
Tilapia harvest welfare is one of the least addressed points in the welfare chain for this globally significant species. The harvest process - draining ponds, crowding into progressively smaller areas, netting, transport and slaughter - subjects fish to a sequence of stressors that would be considered unacceptable in higher-profile species. The near-universal absence of pre-slaughter stunning in tilapia processing means that billions of fish die each year without any welfare consideration at the point of death. The same stunning technology that has been developed for salmon and other species is technically applicable to tilapia - the barrier is not technical feasibility but commercial priority and regulatory requirement.