Already about 90 percent of all fish stocks are considered maximally exploited or overfished, according to the United Nations Food and Agriculture Organization. But as the world's population continues to grow, more and more people rely on fish as a source of protein. Bluu GmbH – a spin-off of the Fraunhofer Research and Development Center for Marine and Cellular Biotechnology EMB, which is an associated center of the Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering IMTE – has a solution to the problem. The company specializes in the production of cell-based fish, which is made from real fish cells and grown in a bioreactor. Unlike wild-caught fish, this is not at the expense of animal welfare.