Abstract: This profile provides a comprehensive overview of Xiphophorus cortezi, a small, delicately built swordtail endemic to northeastern Mexico. It explores the species' taxonomy, natural history, and distinctive physical and behavioral traits, particularly its complex mating strategies and polymorphic male morphs. The document covers its habitat, reproductive biology, feeding behavior, and the ecological context of its distribution, including sympatry with other Xiphophorus species. Attention is also given to its genetic research significance and its early introduction into the aquarium hobby. Finally, the profile outlines the aquarium care requirements for the species and addresses conservation considerations due to its limited range.

ZooBank:AEC1709A-9681-4698-820C-6DDB98EFAE20.

Original description as Xiphophorus montezumae cortezi:

Rosen, Donn E. 1960. "Middle-American poeciliid fishes of the genus Xiphophorus". Bulletin of the Florida State Museum, Biological Sciences. 5(4):57-242 - [abstract] · (ffm00047)