Rineloricaria fallax

{{Short description|Species of catfish}}

{{Speciesbox

| taxon = Rineloricaria fallax

| authority = (Steindachner, 1915)

| synonyms = *Hemiloricaria fallax

• Loricaria fallax

}}

Rineloricaria fallax, sometimes known as the whiptail loricaria,{{Cite web |title=ITIS - Report: Rineloricaria fallax |url=https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=164380#null |access-date=2023-01-10 |website=www.itis.gov}} is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the upper Rupununi and Branco River basins in Brazil and Guyana. Although the species has been reported from Paraguay, this has been determined to be a misidentification. The species reaches 15.7 cm (6.2 inches) in standard length and is believed to be a facultative air-breather. It is known to spawn in caves, with males tending the clutch and assisting the fry in emerging from the eggs.{{Cite web |date=2023 |editor-last=Froese |editor-first=Rainer |editor2-last=Pauly |editor2-first=Daniel |title=Rineloricaria fallax |url=https://www.fishbase.de/summary/Rineloricaria-fallax.html |website=FishBase}}