Warm-blooded fish is an agile predator. An opah captured during longline surveys by the Southwest Fisheries Science Center. NOAA Fisheries West Coast — -- With its tire-sized frame and ...

This tropical-appearing oval fish — naturally bedecked in rich hues of blue, pink, rose and gold with distinctive white spots, an overall purple and silver sheen and bright red fins — can ...

Opah -- the large, round and brilliant orange fish in the gallery below -- are a tough catch as they don't often travel in schools, and are typically found only in tropical areas with warm water.

Researchers have discovered something surprising about a deep-sea dweller known as the opah: It's got warm blood. IE 11 is not supported. For an optimal experience visit our site on another browser.

Since then, he has discovered that the opah is an active predator, which has a trait that no other fish possesses. It is warm-blooded. Most fish have body temperatures that match the surrounding ...

A large colorful fish washed ashore on the Oregon coast last week in what aquarium officials called a rare occurrence. The 100-pound (45 kilogram) opah fish, also known as a moonfish, was ...

While deepwater fish are slow moving because of the cold, the opah's warm-blooded uniqueness results in faster swimming, better vision and quicker responses, giving it an edge in the survival ...

In a first for marine biology, the large, photogenic opah fish has been found to have a big secret: it’s the only fish known to be warm blooded and capable of heating its entire body.