first record from Argentina:
Trichomycterus rivulatus Valenciennes, 1846

published in:
Andreoli Bize, J., L. Fernández & G. Contreras (2021):
Fishes of the Puna: First record of Trichomycterus rivulatus Valenciennes 1846 from Argentina and new localities for the genus (Siluriformes: Trichomycteridae).
Biología Acuática 37: e026, 10 p.

abstract (from publication):
The Altiplano-Puna Basin exhibits a particular group of freshwater fishes, being its biological diversity still unknown. News records of Trichomycterus species are herein added to the checklist of fishes living in the Puna of Argentina: This is the first record of Trichomycterus rivulatus in Argentina, while T. roigi is recorded in six streams of Jujuy province (Volcán Granada, Volcán Tuzgle, El Moreno, Cieneguillas, and Santa Catalina) and Salta province (La Poma) in high-elevation area between 3,000 to 4,600 m a.s.l., and T. alterus between 2,000 to 2,400 m a.s.l. at three localities of Catamarca province (El Bolsón, Fiambalá, and Chauschil). At present, Puna fishes are threatened by salmonids (Oncorhynchus mykiss) introduced since 1960.