Are Fish Conformers Or Regulators?

Are Fish Conformers Or Regulators? Birds and mammals regulate their body temperatures and can live in large ecological niches. These kinds of animals are called regulators, or homeotherms. Conformers, or poikilotherms, must relocate to maintain body temperature. Lizards, insects and fish represent examples of conformers. What animals are regulators? Regulators Conformers Examples- Mammals, birds, etc.