Bangkok, Thailand, October 3, 2008--"Hey, I got your stomach," one fish perhaps says to the other as they swim through an aquarium.

These Nile tilapia, attached at the stomach and dubbed "Siamese Twins," are eight-months-old. The bigger fish tends to protect the smaller one as it looks for food, according to Reuters.

Native to Africa, Nile tilapia have been imported around the world for aquaculture and are now commonly found in ponds, lakes, and rivers.