Tlaloc is a genus of fish in the family Profundulidae endemic to Mexico, Guatemala and Honduras.Morcillo, F., Ornelas-García, C.P., Alcaraz, L., Matamoros, W.A. & Doadrio, I. (2015): Phylogenetic relationships and evolutionary history of the Mesoamerican endemic freshwater fish family Profundulidae (Cyprinodontiformes: Actinopterygii). Molecular Phylogenetics and Evolution, 94 (Part. A): 242–251. The genus is not, however, recognised by Fishbase or in the 5th Edition of Fishes of the World. The genus is named for Tlaloc the water god of the Aztecs.
Species As delineated in 2015 there are 4 recognized species in this genus: Tlaloc candalarius (C. L. Hubbs, 1924) (Headwater killifish) Tlaloc hildebrandi (R. R. Miller, 1950) (Popoyote or Chiapas killifish) Tlaloc labialis (Günther, 1866) (Large-lip killifish) Tlaloc portillorum (Matamoros & J. F. Schaefer, 2010) (Ulúan killifish)
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