Pituna is a genus of fish in the family Rivulidae.

These annual killifish are endemic to seasonal pools, swamps and lagoons in the Araguaia–Tocantins, Xingu, uppermost Paraná and Paranaíba river basins in Brazil.

Most are from savanna regions, but P. xinguensis is from the Amazon rainforest.

[2][3] They are small fish, up to 4.5 cm (1.8 in) in standard length.

[2] Pituna and the closely related Maratecoara, Papiliolebias, Plesiolebias and Stenolebias form a clade, Plesiolebiasini.