That's not the issue, though I recognise the poster above was remarking about fish. High surface temps means more cyclones / typhoons / hurricanes, more coral bleaching, lower fish breeding and feeding because reefs die, impacts out food chains and destroys our homes.
Im Australian, so it also means droughts, water restrictions, and significant increases in bushfire number and severity after a few years of drought. Drought followed by cyclone, or bulk rain events causes catastrophic flooding. Its a shit show.