Resumen de Austrolebias toba (Cyprinodontiformes: Rivulidae), una especie nueva de pez anual de la Argentina
Austrolebias toba (Cyprinodontiformes: Rivulidae), a new species of annual fish fromArgentina. Austrolebias toba sp. n. is described from temporary ponds of the lower río Bermejo basin, in theproximity of the mouth, from Chaco province, Argentina. This new species, is distinguished from all otherspecies of the genus by the following combination of characters: dorsal-fin origin anterior to anal-fin origin;dorsal profile of head straight or slightly concave; male body green bluish with some light small dots arrangedon vertical lines on flank; very small dots light blue iridescent scattered on unpaired fins; a longitudinal stripelight blue on upper half of dorsal fin of male; dorsal-fin base longer that anal-fin base; pectoral and pelvic finsgreen bluish; median and posterior dorsal-fin rays of females longer than remainig ones forming an acute posteriortip; round black spots on anterior and middle portion of flank of female. Additional data of the habitat andbehaviour in aquarium are added.
