Some Fish can handle the heat

I found this article and it discusses how tropical fish have a better tolerance for the high and rising temperatures in the sea. They were said to evolve over several generations and appear to have a better capacity to deal with the heat than other fish. This is crucial for the survival of these fish due to the rising temperatures from global warming and can inevitably prevent them from becoming extinct and dying off. They tested this theory by exposing damsel fish to temperatures that were 1.5 to 3.0 degrees higher than normal there was a decline in their aerobic capacity. When compared to the fish that were bred for several generations there was almost a complete environmental adjustment with the offspring in the higher temperatured water . This happens because when the one generation goes through their life cycle in warm temperatured water the next generation that comes up is better able to cope with the temperature. So its pretty amazing to see the adaptations these fish can make from generation to generation. My guess is that if the water temperature got colder these fish could make these same adaptations as they did with the warmer water as well.