Question: What direction does the river that Austrolebias bellotti are found in flow?
Sentence (from "Uruguay River"): It passes between the states of Santa Catarina and Rio Grande do Sul in Brazil; forms the eastern border of the provinces of Misiones, Corrientes, and Entre Ríos in Argentina; and makes up the western borders of the departments of Artigas, Salto, Paysandú, Río Negro, Soriano, and Colonia in Uruguay.
Relevant evidence: No