Blind fish of Yunnan
The nice thing about the Web is that you come across all sorts of weird things, like this photo of blind Golden-line Barbell fish
and can then research more information about them
. These fish look like their eyeballs have been torn from their bodies, leaving just a gap. Click on the little red forward and backward arrows near the bottom of the latter link's page and you will find information on other related blind fish and their underground habitats. Fascinating.