Are Fish(bony), Mammals, Endothermic of Ectothermic?

Answer 1

Fish (bony) are almost all ectothermic. The exceptions are some large sharks, sailfishes, and tunas which have partial endothermic capabilities.

Mammals are endothermic ... mammals maintain an internal core temperature without any regulations from their environment.

Answer 2

Fish, reptiles and amphibians are generally classed as ectotherms or exotherms. Birds and mammals are classed as endotherms. There are a few species ectotherms that have the ability to store body heat for short periods. There are a few birds and mammals that can lower their body temps and reduce their metabolism. Birds usually for short periods. Some mammals longer periods.

These terms are indeed a better way to describe the thermal regime of animals. Cold blooded or hot blooded is just too ambiguous and not really accurate.

Answer 3

Ectothermic Fish

Answer 4

mammals are endotherms