Aquaculture's contribution to the world's food basket is essential as global demand for fish grows. Today, fish provides more than 1 billion people with most of their daily animal protein. And, in regions with the greatest number of resource-poor and vulnerable people, fish is often the primary animal-source food. This fact sheet presents the key benefits of aquaculture to nutrition, food security and the role of WorldFish in supporting and improving the growth of sustainable aquaculture.