Friday, November 11, 2016

[Ichthyology • 2016] Xenotoca doadrioi & X. lyonsi • Two New Species of the Genus Xenotoca Hubbs and Turner, 1939 (Teleostei, Goodeidae) from central-western Mexico

Xenotoca doadrioi X. lyonsi 
Domínguez-Domínguez, Bernal-Zuñiga, & Piller, 2016 

FIGURE 5. a) Xenotoca doadrioi, Holotype male CPUM-9589 and female from San Sebastian
b) Xenotoca lyonsi, Holotype male CPUM-9590 and female from Tamazula
c) Xenotoca eiseni, male and female from Compostela population picture by Wolfgang Gessl []


The subfamily Goodeinae (Goodeidae) is one of the most representative and well-studied group of fishes from central Mexico, with around 18 genera and 40 species. Recent phylogenetic studies have documented a high degree of genetic diversity and divergences among populations, suggesting that the diversity of the group may be underestimated. The species Xenotoca eiseni has had several taxonomic changes since its description. Xenotoca eiseni is considered a widespread species along the Central Pacific Coastal drainages of Mexico, inhabiting six independent drainages. Recent molecular phylogenetic studies suggest that X. eiseni is a species complex, represented by at least three independent evolutionary lineages. We carried out a meristic and morphometric study in order to evaluate the morphological differences among these genetically divergent populations and describe two new species. The new species of goodeines, Xenotoca doadrioi and X. lyonsi, are described from the Etzatlan endorheic drainage and upper Coahuayana basin respectively.

Keywords: Pisces, taxonomy, morphometric, meristic, conservation, Central Mexico

Domínguez-Domínguez, O., Bernal-Zuñiga, D.M. and Piller, K.R. 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

1 comment:

  1. Great news! I would like to raise a question regardiing this finding. Does anybody knows what is the correct name for the Xenotoca sp San Marcos found in the acuarium trade? Thank for your help, Jesús