Xenodexia is a genus of poeciliid fish. It contains the single species Xenodexia ctenolepis, the Grijalva studfish, which is endemic to river basins in Guatemala where it lives in both slow- and fast-flowing waters. Females reach up to 4.5 cm (1.8 in) in total length and males are somewhat smaller.[2]
| Xenodexia | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Cyprinodontiformes |
| Family: | Poeciliidae |
| Subfamily: | Poeciliinae |
| Tribe: | Xenodexini C. L. Hubbs, 1950 |
| Genus: | Xenodexia C. L. Hubbs, 1950 |
| Species: | X. ctenolepis |
| Binomial name | |
| Xenodexia ctenolepis C. L. Hubbs, 1950 | |
