A paper published on Zootaxa (The genus Orestias (Teleostei: Cyprinodontidae): nomenclatural errors in the assignation of species names) has reviewed the genus Orestias and come up with a number of interesting notes including errors in the nomenclature for a number of species as well as notice of a questionable species. A interesting side note is the authors (FRANCO CRUZ-JOFRÉ, MOISÉS A. VALLADARES, IRMA VILA & MARCO A. MÉNDEZ) are part of the Institute of Ecological Diversity at the University of Chili in Las Palmeras.
The genus Orestias (Valenciennes 1839) includes 44 valid species and one currently under review from the Altipano in the Andes Mountains. More than half of the species inhabit the Lake Titicaca region (editors note: there is question as to how many are now extinct.) and the rest range from Lake Lacsha in the center of Peru and the Ascotan salt pan in northern Chili. The authors noted the genus has been used as a model to study the speciation process.
An abridged copy of the paper can be accessed at: http://www.mapress.com/zootaxa/2013/f/z03746p599f.pdf. (The accompanying photo for this news item is a linked public domain picture of Orestias chungarensis.)