first record from Argentina:
Diapoma pyrrhopteryx Menezes & Weitzman, 2011

published in:
Almirón, A., J. Casciotta, Š. Říčanová, K. Dragová, L. Piálek & O. Říčan (2016):
First record of Diapoma pyrrhopteryx Menezes & Weitzman, 2011 (Characiformes: Characidae) from freshwaters of Argentina.
Ichthyological Contributions of PecesCriollos 40: 1-3

abstract (from publication):
Diapoma pyrrhopteryx is registered for the first time in freshwaters of Argentina, upper río Uruguay basin, in the province of Misiones. This species was found in arroyo Toro, tributary of the río Pepirí Guazú, the only river of Argentina included in the Upper Uruguay freshwater ecoregion. D. pyrrhopteryx is one of 27 endemic fish species known from this ecoregion.