Profundulus is a genus of fish in the family Profundulidae endemic to Mexico and northern Central America. It was regarded as the only genus in the Profundulidae but workers have split the genus and raised a second genus Tlaloc.
Species These are the currently recognized species in this genus: Profundulus adani Sara E. Dominguez-Cisneros, 2021 Dominguez-Cisneros, Sara E, Ernesto Velázquez-Velázquez, Caleb D. McMahan, Wilfredo A. Matamoros; A new species of killifish of the genus Profundulus (Atherinomorpha: Profundulidae) from the upper reaches of the Papaloapan River in the Mexican state of Oaxaca. 2021. Ichthyology & Herpetology. 109(4):949–957 Profundulus balsanus C. G. E. Ahl, 1935 (Balsas killifish) Jamangapé O, J.A., Velázquez-Velázquez, E., Martínez-Ramirez, E., Anzueto-Calvo, M.J., Gomez, E.L., Dominguez-Cisneros, S.E., McMahan, C.D. & Matamoros, W.A. (2016): Validity and Redescription of Profundulus balsanus Ahl, 1935 (Cyprinodontiformes: Profundulidae). Zootaxa, 4173 (1): 55–65. Profundulus candalarius Hubbs, 1924 (Headwater killifish) Profundulus chimalapensis Luis Fernando Del Moral-Flores, Eduardo López-Segovia & Tao Hernández-Arellano, 2020Luis Fernando Del Moral-Flores, Eduardo López-Segovia & Tao Hernández-Arellano; Profundulus chimalapensis, una nueva especie de pez ciprinodóntido (Cyprinodontiformes: Profundulidae) del Río Coatzacoalcos, México | https://revistas.ucr.ac.cr/index.php/rbt/article/view/40340/44229 Profundulus guatemalensis (Günther, 1866) (Guatemalan killifish)
Profundulus hectori Domínguez-Cisneros, Sara Elizabeth & Ernesto Velázquez-Velázquez, Omar Domínguez-Domínguez, Rosa Gabriela Beltrán-López. , 2025 (Mezcalapa killifish)Domínguez-Cisneros, Sara Elizabeth & Ernesto Velázquez-Velázquez, Omar Domínguez-Domínguez, Rosa Gabriela Beltrán-López. 2025. "A new species of Profundulus (Cyprinodontiformes: Profundulidae) from southeastern Mexico". Neotropical Ichthyology. 23(2):
Profundulus hildebrandi R. R. Miller, 1950 (Chiapas killifish) Profundulus kreiseri Matamoros, J. F. Schaefer, C. L. Hernández & Chakrabarty, 2012 (Kreiser's killifish) Matamoros, W.A., Schaefer, J.F., Hernández, C.L. & Chakrabarty, P. (2012): Profundulus kreiseri, a new species of Profundulidae (Teleostei, Cyprinodontiformes) from northwestern Honduras. ZooKeys, 227: 49–62. Profundulus labialis (Günther, 1866) (Largelip killifish) Profundulus mixtlanensis Ornelas-García, Martínez-Ramírez & Doadrio, 2015 Ornelas-García, C.P., Martínez-Ramírez, E. & Doadrio, I. (2015): A new species of killifish of the family Profundulidae from the highlands of the Mixteca region, Mexico. Revista Mexicana de Biodiversidad, 86 (4): 926–933. Profundulus oaxacae (Meek, 1902) Profundulus portillorum Matamoros & Schaefer, 2010 Profundulus punctatus (Günther, 1866) (Oaxaca killifish)
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