Austrofundulus is a genus of killifish in the family Rivulidae native to northern Colombia, northern Venezuela and southwestern Guyana.

[2] They are annual killifish where adults generally have a short life in temporary ponds or swamps and the eggs experience a period of drought, only hatching when again covered by water.

[3] They are small thickset fish, no more than 10 cm (3.9 in) in total length,[4] and most less than half that size.

[2] Austrofundulus is closely related to Rachovia,[2] and it has been suggested that the former should be merged into the latter.

[5] There are currently 7 recognized species of Austrofundulus:[4]