why traceability can feed the world

Today, i came across an interesting TED talk, showing the traceability in the fish chain is the crucial entry point, in order to produce sufficient fish protein for the world. Jackie Savitz claims that if fisheries were managed correctly across the world (i.e fishermen are accountable and quotas implemented), more caught fish could be produced and feed more people. This can only be reached with traceability She also shows that caught fish is the animal protein that uses least water... watch it yourself :


So far so well, but in the livestock and fish research program, there is the implicit assumption there will not be sufficient caught fishes, and digs deeper into fish farms. Probably the combination of well managed caught fishes and farmed fishes will be contributing to more animal protein for the poor...