2024. The Pathogen index in freshwater drum (Aplodinotus grunniens R.) from the usumacinta river in southeastern mexico (Aplodinotus grunniens R.) from the usumacinta river in southeastern mexico: Pathogen index in freshwater drum from the usumacinta river . Agro Productividad. (Sep. 2024). DOI:https://doi.org/10.32854/agrop.v17i8.2831.