The sarcastic fringehead might be a small breed, but it is also known to be extremely aggressive—even toward its own kind.

Frogfish are some of the most colorful creatures under the sea — and some of the most unique, too. They look more like frogs than fish with their leg-like fins and their quick-snapping jaws, but they ...

Imagine plunging into the ancient seas, only to come face to face with a creature so bizarre, it almost defies belief.

The Dunkleosteus is one of the most formidable fish to have ever swam in the seas, but its disappearance is something of a mystery.

When told about a strange, fanged fish that had washed ashore on an Oregon beach, the Seaside Aquarium folks knew what kind of fish it was.