Agence France-Presse: FISH have lost half their average body mass and smaller species are making up a larger proportion of European fish stocks as a result of global warming, a study has found. ‘It’s huge,’ said study author Martin Daufresne of the Cemagref Public Agricultural and Environmental Research Institute in Lyon, France. ‘Size is a fundamental characteristic that is linked to a number of biological functions, such as fecundity — the capacity to reproduce.’ Smaller fish tend to …