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pmid: 27988757
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.
Male, Animal Structures, Organ Size, Cyprinodontiformes, Animals, Body Size, Female, Animal Distribution, Mexico, Ecosystem, Phylogeny
Male, Animal Structures, Organ Size, Cyprinodontiformes, Animals, Body Size, Female, Animal Distribution, Mexico, Ecosystem, Phylogeny
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