Otocinclus bororo is a species of armoured catfish native to the upper Paraguay river basin in South America.

It is also known as the Paraguay dwarf sucker.

[1] Otocinclus bororo is found in the upper Paraguay river basin including the Paraguay, La Plata and Paraná rivers.

The type locality of the species is a stream in Barra do Bugres, Mato Grosso, Brazil.

Females are larger than males and reach an average adult size of 31 mm (1.2'').