Pterocryptis buccata, the cave sheatfish, is a species of catfish found in Asia, and presently known only from Amphoe Sai Yok in the Meklong basin in Kanchanaburi Province, western Thailand.
This species reaches a length of .
The type locality is listed as Mae Khlong basin, about 14ð15'N, 99ð04'E, Amphoe Sai Yok, Kanchanaburi Province, Thailand.