Member of the family Balitoridae (Loaches) belonging to the order Cypriniformes (Carps). This group of fish is known for their non-visual senses and its a good thing since this fish is perhaps one of the most specialised species on earth inhabiting only waterfalls within caves in Thailand. This fish has no eyes and lives out its entire life within the cave. They hang on to rock with microscopic hooks on their flattened fins. Their diet is bacteria. They were filmed for the first time for the BBC documentary Planet Earth.