Petitella

Petitella
Petitella bleheri
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Characiformes
Family: Acestrorhamphidae
Subfamily: Megalamphodinae
Genus: Petitella
Géry & Boutière, 1964
Type species
Petitella georgiae
Géry & Boutière, 1964

Petitella is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins, of the order Characiformes. The fishes in this genus are found in South America.

They are all popular tropical fish in the aquarium hobby. They are commonly known as rummy-nose tetras.