Rineloricaria cubataonis

{{Short description|Species of catfish}}

{{Speciesbox

| taxon = Rineloricaria cubataonis

| authority = (Steindachner, 1907)

| synonyms = *Loricaria cubataonis

}}

Rineloricaria cubataonis is a species of catfish in the family Loricariidae. It is a freshwater fish native to South America, where it occurs in Atlantic coastal rivers in southeastern Brazil, with its type locality reportedly being the Cubatão River in the state of Santa Catarina.{{Cite web |title=Rineloricaria cubataonis • Loricariidae • Cat-eLog |url=https://www.planetcatfish.com/common/species.php?species_id=3855 |access-date=2023-02-03 |website=www.planetcatfish.com |language=en-gb}} The species reaches 5.4 cm (2.1 inches) in standard length and is believed to be a facultative air-breather.{{Cite web |date=2023 |editor-last=Froese |editor-first=Rainer |editor2-last=Pauly |editor2-first=Daniel |title=Rineloricaria cubataonis |url=https://www.fishbase.se/summary/50572 |website=FishBase}}