Change in climate, resulting in warmer and less oxygenated oceans, could mean a reduction in the size of fish.
Over 600 species were studied from oceans around the world. In the first global scale application of the theory that fish growth is affected by oxygen supply, it was found size could decline by 14-20% between 2000 and 2050.
Fish are known to adapt to a changing climate through changing distribution and seasonality. The findings imply that there may have been a big piece missing in understanding the ocean’s relationship with global warming.