Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil

Abstract

A new species of characid fish, Astyanax totae, is described from a small tributary in the upper drainage of the rio Iguaçu, Paraná basin, Brazil. The new species is distinct from most species of Astyanax by the vertically elongated humeral spot, slightly expanded above the lateral line to posterodorsal margin of opercle, followed by a midlateral dark stripe expanded from the humeral region to the median caudal-fin rays, maxilla with 2 to 5 teeth (usually 3) and 15 to 18 branched anal-fin rays.<br>É descrita uma nova espécie de caracídeo coletada em um pequeno tributário do trecho superior do rio Iguaçu, bacia do rio Paraná, Brasil. Astyanax totae distingue-se das demais espécies do gênero pela presença de mancha umeral verticalmente alongada, sendo a parte superior mais alargada em contato com a margem postero-dorsal do opérculo, seguida de uma faixa lateral escura que se prolonga desde a região umeral até os raios medianos da nadadeira caudal, maxilar com 2 a 5 dentes (freqüentemente 3) e 15 a 18 raios bifurcados na nadadeira anal

Astyanax vermilion and Astyanax burgerai: new characid fishes (Ostariophysi: Characiformes) from Northeastern Bahia, Brazil

“…The arithmetic mean used in some instances is represented by X. Specimens utilized for comparative analysis are listed under 'Comparative material examined' and other comparisons provided elsewhere were based on the literature information (Eigenmann, 1921(Eigenmann, , 1927Azpelicueta & Garcia, 2000;Bertaco & Malabarba, 2001;Almirón et al, 2002;Haluch & Abilhoa, 2005;Bertaco & Lucena, 2006;Triques et al, 2006;Abilhoa & Duboc, 2007;Zanata & Camelier, 2008 …”

Astyanax henseli, a new name for Tetragonopterus aeneus Hensel, 1870 from southern Brazil (Teleostei: Characiformes)

“…The characid genus Astyanax Baird & Girard, 1854, includes 92 valid and more than one hundred nominal species ranging from Texas to northeastern Argentina (Azpelicueta et al, 2002;Azpelicueta et al, 2003;Casciotta et al, 2003;Lima et al, 2003:106;Lima & Jahnsen, 2004;Bertaco & Lucinda, 2005;Haluch & Abilhoa, 2005). Eigenmann (1921Eigenmann ( , 1927 was the only author who revised the genus Astyanax.…”

A comunidade de peixes de um riacho de Floresta com Araucária, alto rio Iguaçu, sul do Brasil

“…In riffle areas, only Trichomycterus castroi Pinna, 1992 and Trichomycterus davisi Haseman, 1911 were found, while Astyanax aff. scabripinnis (sensu Eigenmann, 1921), Astyanax totae Haluch & Abilhoa, 2005, T. castroi, T. davisi, Phalloceros caudimaculatus (Hensel, 1868 and Jenynsia eigenmanni Haseman, 1911 were all found in pools. Diet included 18 autochthonous items, six allochthonous , and three of uncertain-origin; the frequency of occurrence of all items were calculated.…”