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 ...

Joe Ludlow’s catch of a 181-pound opah might earn him a world record. The fish’s weight exceeds the current record by 18 pounds. Joe Ludlow poses with rare opah catch that could land angler in the ...

The opah, long believed to be yet another sluggish deep-water denizen, is revealed as speedy predator because of peculiar mechanisms that warm its blood. Opah image captured by ©Ralph Pace during a ...

Beachgoers in Oregon last week caught a glimpse of a large, rarely-seen fish when a 100-pound opah washed ashore. The three-and-a-half foot long, silver-and-deep-orange fish washed ashore July 14 on ...

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The opah, or moonfish, is kind of like the Rudolph of the fish world. It's not at all like the other reindeer -- um, I mean fish -- but its unique quality makes it incredibly cool. Well, make that ...

The rare discovery Wednesday of a 100-pound opah on an Oregon beach will offer students a chance to dissect the brilliantly colored fish. The moon-shaped opah, far north of the typical range for the ...

Why is Christian Science in our name? Our name is about honesty. The Monitor is owned by The First Church of Christ, Scientist, and we’ve always been transparent about that. The church publishes the ...

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 ...

New research has revealed the opah, or moonfish, as the first fully warm-blooded fish that circulates heated blood throughout its body much like mammals and birds, giving it a competitive advantage in ...