Hypostomus albopunctatus is a species of freshwater ray-finned fish belonging to the family Loricariidae, the suckermouth armored catfishes, and the subfamily Hypostominae, the suckermouth catfishes. This catfish occurs in the basins of the Paraná River and the Iguazu River, in Argentina, Brazil and Paraguay. The species reaches a standard length of , can weigh up to at least , and is believed to be a facultative air-breather. While similar to the related species Hypostomus heraldoi, H. albopunctatus can be distinguished by its distinctive pale spots and the length of its fin rays. The specific name, albopunctatus, refers to these white spots.
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