''Petitella georgiae'', the false rummy-nose tetra, is a species of

characin Characiformes is an order of ray-finned fish, comprising the characins and their allies. Grouped in 18 recognized families, more than 2000 different species are described, including the well-known piranha and tetras.; Buckup P.A.: "Relationshi ...

found in

Amazon Basin The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries of Bolivi ...

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

and

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

. It is a very popular

aquarium An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aq ...

fish. It is the sole member of its genus, but resembles two species from another genus, ''

Hemigrammus bleheri ''Hemigrammus bleheri'' is a species of characin found in Amazon Basin in Brazil and Peru. One of three species called rummy-nose tetra, but is also called firehead tetra according to FishBase. Reaching a standard length of 2" (5 cm) it is ...

'' and '' H. rhodostomus''. It is distributed in the upper Amazon basin in Peru, Rio Purus, Rio Negro, and Rio Madeira basins (which has been found in an aquarium fish import from Peru in the late 1950s in Switzerland by H. Boutiere). Some specimens classified as ''P. georgiae'' have a black stripe in the caudal peduncle extending forwards into the body, surmounted above by a thin iridescent gold line.

References

* Characidae Monotypic fish genera Fish of South America Fish of Brazil Fish of Peru Taxa named by Jacques Géry Taxa named by Henri Boutière Fish described in 1964 {{Characiformes-stub