The latitudinal speciation gradient in freshwater fishes: Higher speciation across assemblages at higher latitudes in the northern hemisphere - Juliana Herrera-Pérez; Juan Carvajal-Quintero; Axel Arango; Daniel Valencia-Rodríguez; Ana Berenice García-Andrade; Pablo Tedesco; Fabricio Villalobos (PLoS ONE, 2026)