|Typical wild form (above) and orange aquarium form (below)|
It measures 4–5 centimetres (1.6–2.0 in) in total length, including claws. Most specimens found in the wild are brown, sometimes with a gray or blue tint. Cambarellus patzcuarensis var. "Orange" (Mexican dwarf crayfish, sometimes Mexican dwarf orange crayfish) is an orange-coloured mutation often held in aquariums, but this form is rarely found in the wild.
The species is named after Lake Pátzcuaro, at an altitude of 2,035 metres (6,677 ft) in Michoacán, Mexico. As well as Lake Pátzcuaro, C. patzcuarensis also occurs in springs in Chapultepec, Opopeo and Tzurumutaro.
- "Cambarellus patzcuarensis". Integrated Taxonomic Information System. Retrieved October 5, 2010.
- Gerald Pottern. "Mexican Dwarf Orange Crayfish, Cambarellus patzcuarensis". Petshrimp.com. Archived from the original on April 1, 2008. Retrieved May 16, 2008.
- F. Alvarez; M. López-Mejía & C. Pedraza Lara (2010). "Cambarellus patzcuarensis". IUCN Red List of Threatened Species. Version 3.1 (3.1). International Union for Conservation of Nature. Retrieved February 15, 2012.