Oreoglanis laciniosa is a species of catfish in the family Sisoridae, found in the Mae Sa Nga drainage, a tributary of the Salween River in western Thailand, which was discovered by Vidthayanon, Saenjundaeng and H.H. Ng in 2009.Vidthayanon, C., P. Saenjundaeng and H.H. Ng, 2009. Eight new species of the torrent catfish genus Oreoglanis (Teleostei: Sisoridae) from Thailand. Ichthyol. Explor. Freshwat. 20(2):127-156.

Size This species reaches a length of .

Etymology The fish's name is Latin for "indented" or "jagged", referring to the lobulate posterior margin of the lower lip.

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