First record of the genus Tatia (Siluriformes: Auchenipteridae) in freshwaters of Argentina. Author Almirón, Adriana Author Casciotta, Jorge Author Azpelicueta, Mercedes Author Aichino, Danilo Author Benítez, Mauricio Author Piálek, Lubomír Author Doubnerová, Klára Author Říčan, Oldřich text Ichthyological Contributions of PecesCriollos 2014 2014-05-26 27 1 5 journal article 298656 10.5281/zenodo.11558234 e6b0fd8d-83be-4c83-b560-bdc99f1d2e07 1868-3703 11558234 Tatia jaracatia Pavanelli & Bifi, 2009 ( figs. 1-3 ) Material examined All from: Argentina , Misiones Province , río Iguazú basin , arroyo Deseado ( 25º40’15.7” S - 53º55’58.7” W ): MLP 10608 , 1 ex. 45 mm SL, coll: Almirón , Casciotta & Azpelicueta , February 2001 . MLP 10609 , 1 ex. , 53.6 mm SL, coll: Casciotta , Říčan , Piálek , November, 2007 Description Tatia jaracatia is clearly recognizable from its congeners by its colour pattern showing dark flanks with large whitish or pale yellow rounded or oval dots ( figs. 1-3 ). This colour pattern distinguishes this species from T. neivai , the other species inhabiting freshwater environments of Argentina . Morphometric data are presented in table 1 . Habitat The depth of arroyo Deseado was variable, averaging about 80 cm . The bottom was composed of mud, sand and mainly gravel. The stream has falls and pools with clear, rapidly flowing water. The pools had scarce submerged vegetation. One specimen was collected above a fall and the other in a large pool below ( fig. 4 ). Distribution Tatia jaracatia is restricted to the río Iguazú basin above the Iguazú falls ( Pavanelli & Bifi, 2009 ). The specimens collected herein come from arroyo Deseado in Misiones Province ( fig. 7 ).