Medicine & TechnologyThis week scientists discovered the first known warm-blooded fish; except that this fish was already well-known to humans. The comically appointed opah, a large silver and red fish that is large, circular, and flat, has been making appearances in fishing nets off the coast of west Africa and Hawaii for years.
In the cold waters off the California coast, researchers have discovered something no one ever knew existed: a warm-blooded fish. Not only can this large fish regulate its body temperature, but it does it through a truly unique mechanism.