Peces Criollos - Freshwater Fishes of Argentina Peces Criollos - Freshwater Fishes of Argentina
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Gymnocharacinus bergii - recent papers

Gymnocharacinus bergii, photo: Heiko Bleher

The scaleless characid Gymnocharacinus bergii Steindachner, 1903 is a stenothermic teleost fish restricted to the headwaters of the Valcheta stream at the Somuncurá plateau in the Argentinean province
of Río Negro. This species is highly threatened by salmonids (Oncorhynchus mykiss and Salvelinus fontinalis) introduced into its natural environment in 1941 and human activities such as channel drainages and cattle breeding.
Due to its unique position within the Characiformes, its endemic occurence and restricted distribution far south in a thermal stream of northern temperate Patagonia this species was studied or at least mentioned by numerous native and foreign investigators during the years. Unfortunately, publications about this remarkable teleost are widely dispersed in journals and in languages often little known to researchers. 

ICP 61 - Koerber (2019) Literature update on Gymnocharacinus bergii [3 MB]
Koerber & Ortubay (2004): Literature published on Gymnocharacinus bergii [129 KB]
CLOFFAR - 2nd edition

Scleronema milonga sp.nov. from Argentina

Scleronema macanuda sp.nov. from Uruguay

Scleronema teiniagua sp.nov. from Uruguay

Scleronema ibirapuita - first record from Uruguay

Scleronema minutum is a sr. synonym of Pygidium angustirostris

Scleronema operculatum - not a species from Argentina or Uruguay

CLOFFUY - update 3

Oligosarcus hepsetus - not a species from Argentina or Uruguay

Moenkhausia forestii - first record from Argentina

Moenkhausia sanctaefilomenae - not a species from Argentina

Moenkhausia australis - confirmed for Argentina

Andromakhe gen.nov. - 5 comb.nov from Astyanax

Psalidodon - 30 comb.nov. from Astyanax

Psalidodon anisitsi comb.nov. from Hyphessobrycon

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