Peces Criollos - Freshwater Fishes of Argentina Peces Criollos - Freshwater Fishes of Argentina
English  Deutsch  Español 

Astyanax chico sp.nov.

Astyanax chico, Holotype
photo: Jorge R. Casciotta

new species:
Astyanax chico Casciotta & Almirón, 2004

type locality:
province of Jujuy, río San Francisco basin, río de Zora in route 34; holotype: MACN-Ict 8673, 60.0 mm SL

published in:
Casciotta, J.R. & A.E. Almirón (2004):
Astyanax chico sp.n. - a new species from the río San Francisco basin, northwest of Argentina (Teleostei: Characiformes: Characidae).
Zoologische Abhandlungen des Staatlichen Museums für Tierkunde, Dresden 54: 11-17

abstract (from publication):
Astyanax chico is described from two tributaries of the río San Francisco located in the northwestern part of Argentina. Astyanax chico bears hooks on all fin rays of males like A. ojira, A. pynandi, A. stenohalinus, and A. troya. Astyanax chico is distinguished from the remaining species of the genus by the following combination of characters: one maxillary tooth with 2 to 4 cusps; teeth of inner premaxillary row expanded distally, deep dentary bearing 7 teeth decreasing in size anteroposteriorly; males with hooks in all fins; 35-39 perforated scales in lateral series; iii-iv, 19-24 anal fin rays. One humeral spot vertically elongated, a second lateral spot may be faint or well developed.

distribution (from publication):
Astyanax chico sp.n. is known from the río de Zora and arroyo Saladillo, both affluents of the río San Francisco.

Astyanax chico - Casciotta & Almirón (2004): Astyanax chico sp.n. - a new species from the río San Francisco basin, northwest of Argentina [469 KB]
Hypostomus roseopunctatus - first record from Argentina

Megaleporinus piavussu - first record from Argentina

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

 Powered by ReadSys