Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same ...

An oddly shaped deep-sea fish recently washed up on an Oregon beach, catching the attention of a local aquarium. The Seaside Aquarium identified the fish as a longnose lancetfish.

Making up for the world's disappointment that there wasn't a prehistoric creature living in a Scottish loch was the South African discovery of a strange, steel blue fish with limb-like fins. The fish ...