Researchers say they’ve discovered the first known fully warm-blooded fish. It’s called the Opah, or moonfish, and it lives in cold environments deep below the ocean’s surface. Scientists say the Opah ...

A first-time angler on an overnight trip out of San Diego has landed a potential world-record opah. Beau Leaman of Santa Clarita, Ca., caught the 188.6-pound opah, or moonfish, after a 45-minute ...

Add Yahoo as a preferred source to see more of our stories on Google. Last week, a 100-pound tropical Opah, also known as a moonfish, washed ashore on Oregon's coast. The fish was a surprising ...

An opah or moonfish that washed up on Sunset Beach in northern Oregon on July 14. Tiffany Boothe / Seaside Aquarium Last week, a 100-pound fish shaped like a manhole cover and festooned in silver and ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A weird-looking 3.5-foot-long fish was found washed up on an Oregon ...

SEASIDE, Oregon -- 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 ...

A large tropical fish washed up on the shores of Oregon's Sunset Beach on July 14, and experts were amazed by both its size and the location where it was found. Tiffany Boothe, the assistant manager ...