Peces Criollos - Freshwater Fishes of Argentina Peces Criollos - Freshwater Fishes of Argentina
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Trichomycterus pseudosilvinichthys sp.nov.

new species:
Trichomycterus pseudosilvinichthys Fernández & Vari, 2004

published in:
Fernández, L. & R.P. Vari (2004):
New Species of Trichomycterus from Midelevation Localities of Northwestern Argentina (Siluriformes: Trichomycteridae).
Copeia 2004 (4): 876–882

abstract (from publication):
Trichomycterus pseudosilvinichthys, new species, is described from midelevation drainages in the Provincia de La Rioja, Argentina. The new species is distinguished from other members of the apparently nonmonophyletic genus Trichomycterus by having the insertion of the first proximal dorsal-fin pterygiophore at, or posterior to, vertebra 20 to 22; the presence of the pelvic fin and girdle; a fronto-lachrymal tendon bone with a lateral expansion but an incomplete laterosensory canal segment; the absence of a portion of the supraorbital laterosensory canal running between the frontal and nasal bones with the resultant loss of pore 3; the possession of 17–19 ribs; a first pectoral-fin ray that is not prolonged as a short filament; and the tip of the pelvic fin falling short of the anus.

Corydoras longipinnis - first record from Uruguay

Hoplias argentinensis - first record from Uruguay

Odontesthes argentinensis - first record from freshwaters in Argentina

Oligosarcus pintoi - first record from Argentina

Moenkhausia bonita - first record from Paraguay

Potamoglanis johnsoni comb.nov. from Trichomycterus

Schizodon altoparanae - first record from Paraguay

Pinirampus argentina comb.nov. from Megalonema

Farlowella azpelicuetae sp.nov. from Argentina

Jenynsia sulfurica sp.nov. from Argentina

Zungaro jahu - Paulicea gigantea is a jr. synonym

CLOFFAR - update 6

Steindachnerina nigrotaenia - resurrected from synonymy of S. brevipinna

Steindachnerina insculpta - not a species from Argentina

Hypostomus cordovae revalidated from synonymy with H. paranensis

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