One of the bitter truths of this day and age. This is happening worldwide to many, many species of invertebrates, fish, amphibians and reptiles. Birds and Mammals are barely affected, but both have other problems.So even if the fishes can adapt to the temp change; they will likely go extinct simply because not enough of both genders are born....
It's in sections 4.3.1 ff. of Cichlid Atlas 1.I can't find the reference right now