Barilius bernatziki Koumans, 1937 Opsarius bernatziki is a fish in the Opsarius genus of the family Danionidae.

It is found in Thailand, Southeast Myanmar, and the Malay Peninsula.

[1][3] It is associated with a freshwater habitat and can grow up to 9.1 cm.

[4] The fish is named in honor of Hugo Bernatzik (1897–1953), an Austrian anthropologist, photographer and a travel writer, who collected the holotype specimen.

This article relating to Danioninae is a stub.