Yes, what you're seeing really is a fish. Known as the mudskipper, this creature usually lives in areas close to shore and is classified as a fish. About 400 million years ago, they evolved into the first terrestrial species, which would become the ancestors of all land vertebrates today. Although they are classified as fish, mudskippers are actually amphibious and can live on land as well. One of the most unusual traits of these creatures is their mating behavior—male mudskippers perform movements in the mud to showcase their strength and flexibility to attract females. That's why they are known as mudskippers.
