Harttia longipinna is a species of armored catfish of the family endemic to Brazil where it is found in the upper São Francisco River basin. This species grows to a length of SL. References longipinna Catfish of South America Fish of Brazil Endemic fauna of Brazil Taxa named by Francisco Langeani-Neto Taxa named by Osvaldo Takeshi Oyakawa Taxa named by Juan Ignacio Montoya-Burgos Fish described in 2001