Austrolebias bellottii, the Argentine pearlfish, is a species of killifish from the family Rivulidae which occurs in the basins of the Paraná River and Uruguay River, in Argentina and Uruguay.

[1] This species was described as Cynolebias bellottii by the Austrian ichthyologist Franz Steindachner in 1881 from types collected at La Plata, Argentina.

[2] The specific name honours the Italian biologist and paleontologist Cristoforo Bellotti (1823–1919), who supplied Steindachner with specimens from his collection at Museo Civico di Storia Naturale di Milano.

[3] It is the type species of the genus Austrolebias.

This Rivulidae article is a stub.