title: Validity and Redescription of Profundulus balsanus Ahl, 1935 (Cyprinodontiformes: Profundulidae).
abstract: Profundulus balsanus was described by Ahl in 1935 and later placed in synonymy with P. punctatus. Recent molecular studies have demonstrated that specimens identified as P. balsanus belong to a distinct taxon. Herein we used a combination of morphometric, meristic, coloration and osteological data in order to demonstrate the distinctiveness of P. balsanus. Additionally, we used molecular data to reconstruct a phylogeny to place P. balsanus in a systematic context. Profundulus balsanus belongs to the punctatus clade within the genus Profundulus. It can be distinguished from P. oaxacae based on scale count in the lateral line and from P. punctatus based on differences in coloration in the anal fin. We provide a taxonomic key to all Mexican species of Profundulus.
authors.affiliation: Colección de Ictiología, Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas. México. CP. 29039. Tuxtla Gutiérrez, Chiapas, México; Email: unknown.
authors.forename: José A
authors.initials: JA
authors.lastname: Jamangapé O
authors.affiliation: Colección de Ictiología, Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas. México. CP. 29039. Tuxtla Gutiérrez, Chiapas, México; Email: unknown.
authors.forename: Ernesto
authors.initials: E
authors.lastname: Velázquez-Velázquez
authors.affiliation: Departamento de Investigación, Área de Acuacultura, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Oaxaca, Instituto Politécnico Nacional. Hornos Núm. 1003, Col. Noche Buena, Municipio Santa Cruz Xoxocotlán, C.P. 71230, Oaxaca, México; Email: unknown.
authors.forename: Emilio
authors.initials: E
authors.lastname: Martínez-Ramirez
authors.affiliation: Colección de Ictiología, Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas. México. CP. 29039. Tuxtla Gutiérrez, Chiapas, México; Email: unknown.
authors.forename: Manuel J
authors.initials: MJ
authors.lastname: Anzueto-Calvo
authors.affiliation: Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancón, Panama; Email: unknown.
authors.forename: Eyda L
authors.initials: EL
authors.lastname: Gomez
authors.affiliation: Colección de Ictiología, Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas. México. CP. 29039. Tuxtla Gutiérrez, Chiapas, México; Email: unknown.
authors.forename: Sara E
authors.initials: SE
authors.lastname: Dominguez-Cisneros
authors.affiliation: The Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago IL 60605 USA; Email: unknown.
authors.forename: Caleb D
authors.initials: CD
authors.lastname: Mcmahan
authors.affiliation: Colección de Ictiología, Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas. México. CP. 29039. Tuxtla Gutiérrez, Chiapas, México; Email: wilmatamoros@yahoo.com.
authors.forename: Wilfredo A
authors.initials: WA
authors.lastname: Matamoros
mesh_terms: D000818:Animals; D002965:Classification; D003532:Cyprinodontiformes / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics; D005260:Female; D005843:Geography; D008297:Male; D008800:Mexico; D010802:Phylogeny; D017422:Sequence Analysis, DNA