Last updated on:
29-Apr-2022
Xenotoca eiseni (Rutter, 1896)
30-Nov-2016 — Two new species of Xenotoca described
By Juan Miguel Artigas Azas
Two new species of Xenotoca closely related to Xenotoca eiseni (Rutter, 1896) have been proposed by Omar Domínguez-Domínguez, Dulce María Bernal-Zuñiga and Kyle Piller in the journal Zoodata. The two new species: X. doadrioi and X. lyonsi honor respectively Ignacio Doadrio from the National Museum of Natural History [Madrid] for his support of numerous studies on Mexican fish, and John Lyons, who has extensively worked on the conservation of fishes of central Mexico, particularly Goodeids. The two new species comprise isolated populations of what was until now known as Xenotoca eiseni, and are split on a diagnosis comprised of a combination of meristic and morphometric characters. Previous mitochondrial DNA comparisons had shown that the three populations are evolving independently from each other. In the current proposal Xenotoca eiseni is restricted to some lowland affluents of the Rio Grande de Santiago near Compostela, Nayarit. X. doadrioi is limited to the population found in ponds and streams in the area around Etzatlan, Jalisco, and finally X. lyonsi is restricted to the population around Tamazula, Jalisco, found in affluents of the Coahuayana River. The three species are now referred as the Xenotoca eiseni group.
Domínguez Domínguez, Omar & D.M Bernal-Zuñiga, K.R. Pyler. 2016. "Two new species of the genus Xenotoca Hubbs and Turner, 1939 (Teleostei, Goodeidae) from central-western Mexico". Zootaxa. 4189(1):81-98. DOI: 10.11646/zootaxa.4189.1.3 (ffm00865) (abstract)