The unusual cave fish looked like silvery barbs, a type of small bottom-dwelling fish generally found in lakes and rivers, but their eye sockets were “fully covered with skin,” researchers said.

Photo from M. Iqbal Willyanto via Wibowo, Willyanto, Dharmayanthi, Rahmadi and Lumbantobing (2025) The unusual cave fish looked like silvery barbs, a type of small bottom-dwelling fish generally ...