The larger of the two is the blind cave eel, which can can grow up to about 40 centimetres, while the blind gudgeon is a much smaller fish that can reach 5cm in length. Australia's third cavefish ...

"In one place, we found this particularly weird fish," Stiassny said. "It's a blind, depigmented cichlid — it looks very much like a cave fish, but there are no caves in the river." She and her ...