As climate change accelerates, one of the most pressing challenges facing aquaculture is rising water temperatures. Fish farming—an industry that already walks a delicate balance between maintaining animal health, optimizing growth, and managing environmental impacts—faces increasing stress as oxygen levels in ponds, tanks, and coastal enclosures decline. Warmer water holds less dissolved oxygen, putting farmed fish at risk of slower growth, higher susceptibility to disease, and, in severe cases, mass die-offs. Innovative technologies, particularly nanobubble systems, are emerging as a promising tool to counteract this problem.