A single freshwater invasion gave rise to the world's dominant freshwater fish group
Delson Hays, Matthew A. Burnett, Aintzane Santaquiteria, Dahiana Arcila, Alexander Burnett, Olga Otero, Diogo Mayrinck, Ricardo Betancur‐R
The paper challenges the hypothesis of multiple freshwater invasions in otophysan fish by showing that a single invasion is more likely, based on phylogenetic and biogeographic analyses.
bioRxiv · Oct 29, 2026 · PreprintEvolutionary Biology