This story has been updated. It’s one of the most basic biology facts we’re taught in school growing up: Birds and mammals are warm-blooded, while reptiles, amphibians and fish are cold-blooded.

But new research is turning this well-known knowledge on its head with the discovery of the world’s first warm-blooded fish - the opah. In a paper published in Science, researchers from the ...

They are cold-blooded except one species of fish, i.e. Opah is a warm-blooded ... There are 1173 fish species are listed in the IUCN Red list because they threaten and on way of extinction.

Basking sharks can maintain a body temperature that is higher than their environment, putting them among a small group of fish species that are warm-blooded. Out of around 35,000 species of fish ...

Overfishing is driving this mighty warm-blooded fish toward the brink of extinction ... the southern bluefin tuna as endangered or critically endangered on its “Red List” of imperiled species. The ...

One fisherman in the Seychelles, Justin Joubert, took great pride in adding the moonfish to his portfolio and his name to the list of fishermen ... fact that the warm-blooded fish is considered ...

While mammals make meta­bolic heat even at rest, fish mostly keep warm through active movement. Thus the opah’s juiced-up pecs. Partial warmbloodedness has evolved several times in fish ...

There are more than 30,000 species of fish in the world ... Mammals are defined as warm-blooded vertebrates with hair who produce milk to feed their young. Mammals also have more developed ...

amphibians and fish, and 64 extinct species of mammalian predecessors. They found that in mammals, which are warm-blooded, the inner ear canals were more circular and smaller and thinner relative ...

It's one of the most basic biology facts we're taught in school growing up: Birds and mammals are warm-blooded, while reptiles, amphibians and fish are cold-blooded. But new research is turning ...