May 4 (UPI) -- Bravery is often a deadly choice for small or medium-sized fish. New research out of Sweden suggests shier fish are likelier to live longer than their bolder peers.
Researchers at Lund University captured and marked several common roaches, a ubiquitous freshwater fish native to Europe. The scientists then observed each identified specimen's personality. Finally, researchers watched the fish to observe their fate in the wild.