Victoria Braithwaite is Professor of Fisheries & Biology at Penn State University, USA and a Professor of Biology at the University of Bergen, Norway. She studies how fish perceive and sense the world around them and what information they learn and remember. Her work on whether fish feel pain has attracted considerable interest. In 'Do Fish Feel Pain?' she provides a balanced account of the science behind the debate. But the science can only take us so far. To answer whether fish feel pain and whether it matters the role of ethics and philosophy must also be considered.