"You can even see the a beating heart brain and other organs because the scales and skin have no pigments" Yutaka Tamaru said, an associate professor at Mie University. "As this goldfish grows bigger, you can watch its whole life," Tamaru said.

Perhaps an interesting way to teach science to the youngsters..? Or just an awesome novelty pet. Dude, that eye looks so blackkk, it's insane!