Parasitic lice ate this fish's tongue and turned its mouth into a condo (Image credit: Galveston Island State Park) In any relationship, there's usually one partner that does the heavy lifting.

As he neared the fish he saw that a second, smaller sturgeon was in the larger sturgeon’s mouth. It looked to be about 1.5 feet long, with only its tail and part of its body visible. The entire head ...

The river roars in the heat of the summer. The water is clear and cool, and a respite from the high sun. An angler leans back ...

The host fish is known scientifically as Mugil cephalus or the Flathead mullet. "Not to be confused with the business in the front, party in the back haircut," said Bernot. And the parasite seen ...

The large animal was sitting near the river’s bank, staying still and holding a fish in its mouth. "The gator just laid there. He didn’t move the whole time I watched him and taking pictures.

Whatever the type of mouth, human or fish, happy Valentine’s week to everyone. And now you know a bit more about those silly fishy lips we all make.

As the fish open its mouth, you can see a pair of muscles in the mouth that may signal to the other fish its ability to bite hard. Photograph by Watcharapong Hongjamrassilp. ANIMALS; ...

The parasite, a tongue-eating louse, is found in a variety of fish and ecosystems, but it’s not known to what degree. The accidental discovery could spur further research into the parasite.

A photo of an unidentified fish with a toothy human smile was the source of a riddle posed Wednesday by the South Carolina Department of Natural Resources.

“When I took the picture, I honestly didn’t realize Landon put the fish in his mouth because I was trying to get the attention of the two older ones to look at my camera,” Daniels told Fox 4.

This parazen fish (Parazen pacificus) was spotted some 500 meters deep, near Puerto Rico, by a remotely operated underwater vehicle.R. Singer, J. Moore, E. Stanley, NOAA Okeanos Explorer ...