Are Fish Warm Blooded Or Cold?

Are Fish Warm Blooded Or Cold? It’s one of the most basic biology facts we’re taught in school growing up: Birds and mammals are warm-blooded, while reptiles, amphibians and fish are cold-blooded. Are fish warm-blooded or warm-blooded? For over 50 years now, scientists have known that, despite their reputation, not all fish are cold-blooded. Some