Petitella Explained

Petitella is a genus of freshwater fish in the family Characidae of the order Characiformes.

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

Taxonomy and systematics

This genus was formerly monotypic, featuring only P. georgiae. The other two species were allocated to Hemigrammus. Before the reallocation in 2020,^{[1] [2]} they were distinguished by the following common names:

• P. bleheri - Brilliant rummy-nose tetra, or Firehead tetra
• P. georgiae - False rummy-nose tetra
• P. rhodostoma - Rummy-nose tetra

Species

There are three recognized species in this genus:^[3]

Notes and References

1. Web site: Rummynose tetras combine into a single genus. 14 July 2020. Jeremy Gay. Fishkeeping News. 28 December 2023.
2. Phylogenetic relationships of the neon tetras Paracheirodon spp. (Characiformes: Characidae: Stethaprioninae), including comments on Petitella georgiae and Hemigrammus bleheri. Neotropical Ichthyology . 10.1590/1982-0224-2019-0109. free.
3. Bailly, Nicolas. 2014. Petitella Géry & Boutière, 1964. 270352. 28 December 2023.