Opah is indeed the first fish species being discovered as full warm-blooded. I always thought it is strange how they do not freeze to death in such cold environment. Water absorbs heat from anything that is warmer than the water itself. Anything with body temperature higher than the water will continuously losing body heater rapidly when in the cold water. Anyway, I wish I am that immune to cold, so I can swim outdoor during the winter.
It is also true that most cold blood animals such as fish are depended on the temperature of their surroundings to "warm" themselves up in order to function normally.
No, you won't be able to have Opah in your home aquarium. It is not because the size issue, but rather due to the water pressure they are used to. Since Opah is living in deep ocean where the water pressure is extremely high, they will most likely die immediately once being put in shallow water.
›
An amazing discovery in the fish world ! !
