Peces Criollos - Freshwater Fishes of Argentina Peces Criollos - Freshwater Fishes of Argentina
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Otocinclus flexilis is not a species from Argentina

distribution of Otocinclus arnoldi + Otocinclus flexilis
Geographic distribution of Otocinclus arnoldi (red squares) and O. flexilis (black dots).
(modified map from publication)

Not a species from Argentina:
Otocinclus flexilis Cope,1894

remarks:
Lehmann (2006) limits the distribution of Otocinclus flexilis to tributaries of the Patos lagoon system and resurrects O. arnoldi from the synonymy with O. flexilis. Records of Otocinclus flexilis from Argentina are now to be considered Otocinclus arnoldi.

abstract (from publication):
Otocinclus arnoldi from the La Plata basin is resurrected from the synonymy of O. flexilis described from rio Jacuí basin, based on two diagnostic characters: the presence of five branched pectoral-fin rays vs six in O. flexilis, and the presence of the raised tuft of enlarged odontodes at the tip of the supraoccipital posterior process, in juvenile as well as in adults of O. arnoldi...

distribution (from publication):
Otocinclus flexilis is restricted to the laguna dos Patos drainage basin.

published in:
Lehmann, P. (2006): Anatomia e relações filogenéticas da família Loricariidae (Ostariophysi: Siluriformes) com ênfase na subfamília Hypoptopomatinae. Tese de doutorado. PUCRS, Porto Alegre, Brazil. ix + 420 p.
Usage of unpublished data authorized by Roberto Reis.

CLOFFAR - update 5

Steindachnerina insculpta - first record from Argentina

Trichomycterus varii sp.nov. from Argentina

Crenicichla yjhui sp.nov. from Argentina

Hoplias argentinensis sp.nov. from Argentina

Serrapinnus kriegi - first record from Uruguay

Microglanis cottoides - not a species from Argentina

Austrolebias wichi sp.nov.

Jenynsia lineata is a sr. synonym of J. multidentata

Gymnotus cuia sp.nov. from Argentina, Paraguay and Uruguay

Gymnotus paraguensis - first record from Uruguay

Gymnogeophagus taroba sp.nov. from Argentina

Cetopsorhamdia iheringi - first record from Argentina

Poecilia reticulata - first record from Argentina

Acipenser gueldenstaedtii - first record from Argentina

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