Taxonomy and systematics Genetic and morphological evidence cast doubt on the validity of Mexican troglobitic species of the Neotropical catfish genus Rhamdia (Siluriformes: Heptapteridae) Evidencia genética y morfológica pone en duda la validez de las especies mexicanas troglobias del bagre neotropical del género Rhamdia (Siluriformes: Heptapteridae
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