“About 250 species of subterranean fish are known on Earth, eking out a living in a world of permanent dark and scant food. They are usually small, generally a few inches long, since there’s usually little food or prey to eat.
But in an underground chamber in northeastern India, researchers have discovered a cave fish that is much bigger—growing to nearly a foot and half in length and weighing about 10 times more than any known species.”
View the whole story here: https://www.nationalgeographic.com/animals/2020/02/worlds-largest-cave-fish-found-in-india/