In the meantime, heres a great story on the opah fish (also commonly known as moonfish, sunfish and kingfish) which they have just recently discovered to be warm blooded. Mother nature strikes again, turning common conceptions on their heads.
Link: HERE
"The large and colourful opah has become the first known "warm-blooded" fish, as scientists discovered it can regulate the temperature of its whole body. The opah traps warmth from its flapping fins, which are well insulated by fat."
"It uses that heat to keep its heart, brain and other organs warm while it swims to depths of hundreds of metres. Other fish like tuna can warm specific body parts, boosting performance at key times, but whole-body "endothermy" has not been observed in a fish before."
"Other fish like tuna can warm specific body parts, boosting performance at key times, but whole-body "endothermy" has not been observed in a fish before."
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