Petitella

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

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

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]

References
  1. Jeremy Gay (14 July 2020). "Rummynose tetras combine into a single genus". Fishkeeping News. Retrieved 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. doi:10.1590/1982-0224-2019-0109.
  3. Bailly, Nicolas (2014). "Petitella Géry & Boutière, 1964". WoRMS. World Register of Marine Species. Retrieved 28 December 2023.
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