Are fishes endothermic or exothermic

Answer 1

Fish are ectothermic, which is commonly referred to as 'cold-blooded'. Their body temperature is dependent on external environmental conditions.

Answer 2

You are using very strange terms to define fish. You must be confusing your terms. The endothermic from endothermic (absorb heat) and exothermic (release heat) is not the same as endothermy.

Endothermy refers to warm-blooded, and fish are not warm-blooded. But there is no such thing as exothermy, rather fish are cold-blooded, that is they are poikilotherms.

So to strictly answer your strange question, the answer is neither, fish are neither warm blooded nor release heat in significant amounts.