A recent study of global fish populations suggests that fast-growing species of fish are more vulnerable to population collapses than slow growing species when experiencing overfishing. Published this week in the Proceedings of the Royal Society B journal, the study by Malin Pinsky and David Byler considers the question of why some populations are more vulnerable than others. Their research suggests that over the past six decades, the risk of collapse was more than tripled for fast-growing when compared with slow-growing species that experienced overfishing.