This bright blue fish, named the blue parrotfish, can be found in the waters of the Atlantic Ocean, and spends 80% of its time searching for food.

Herons also have surprising intellectual abilities; they can use bread to catch fish! It is thought that the birds learn the technique from watching fisherman throw baited hooks and tourists tossing bread to attract fish.

This is the red-eyed gaper, a type of anglerfish that can be found up to 2km below the ocean's surface. Its large head and red blobby face may not look too attractive, but the gaper lures prey in with the shiny patch between its eyes.

Penguins may lack teeth, but they have backward facing spines in their throats that grip and guide fish down.

A new study finds that Mudskipper fish carry water in their mouths in order to eat prey outside of water. As seen in the video below, the hidden water is expelled at the moment of eating and it serves as a suction to move the water and their meal back toward the esophagus. The water suction, or “hydrostatic” tongue, may serve as the evolutionary bridge that allowed our aquatic ancestors to begin feeding on land.

The Ozark cavefish (Amblyopsis rosae) is a small subterranean freshwater fish native to the United States. The fish has no pelvic fin; the dorsal and anal fins are farther back than on most fish. It has only rudimentary eyes and no optic nerve.

Most foods today are fortified with essential oils like omega-3 fatty acids. Naturally, these oils are found in fish, and are known to benefit many parts of the body, including the eyes, brain, heart, and joints. So, are these so-called beneficial oils important for people who lack the DNA profile needed to metabolise them?

It turns out that the extra omega-3 might not do much good at all. According to a study published in Science, Inuit people living in Greenland whose traditional diet of fish and marine mammals have the right enzymes in their bodies needed to metabolise these foods that are very high fat content.

The researchers reported that their DNA that was most different was on chromosome 11, specifically among genes that control the ...

Shown above are vampire fish caught in Corona Falls, Guyana. Also called payara by locals, these Amazon Basin predators feed on other fish, especially piranhas, which they impale on their long fangs.