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Published online by Cambridge University Press: 12 February 2025
The fortune jack (Seriola peruana), a pelagic fish typically found along the Tropical Eastern Pacific, has been recorded in the northernmost Gulf of California (GC) region. The first record in the Upper Gulf and habitat expansion of S. peruana is reported based on the meristic, morphometric, and biological data of three specimens caught by local artisanal fishermen in April 2024. The lack of commercial value likely explains the region's absence of records for this species. The increased presence of S. peruana distribution in the Upper GC could have significant ecological implications, which warrants further fish habitat use and climate change research.