Gyrinocheilus pustulosus (common name: Borneo algae-eater) is a species of cyprinid of the genus Gyrinocheilus.

[1] It inhabits the Kapuas, Mahakam and Kayan basins of Indonesian Borneo.

[1] It is ten dorsal soft rays and 39 or 40 vertebrae.

[1] Unsexed males have a maximum length of 35.5 centimetres (14.0 in).

[1] It is classified as "data deficient" on the IUCN Red List[2] and considered harmless to humans.