first record from Argentina:
Megaleporinus piavussu (Britski, Birindelli & Garavello, 2012)

published in:
Benitez, M.F. & D.R. Aichino (2020):
First record of Megaleporinus piavussu (Characiformes: Anostomidae) from Argentina.
Ichthyological Contributions of PecesCriollos 64: 1-4

abstract (from publication):
Megaleporinus obtusidens and M. macrocephalus were known to be the only representatives of the genus in Argentina and the former was also the only species recorded from the Paran√° river in the country. Recent collection campaigns at Paran√° River in Argentina [Corrientes] allowed us to identify for the first time the presence of Megaleporinus piavussu.