Data and code for: Integrating ecological and participatory evidence for freshwater fish conservation prioritisation in a regulated West African river basin

Anonymised field, survey and expert data, processed values, Python reproduction scripts, tables and figures supporting the article “Integrating ecological and participatory evidence for freshwater fish conservation prioritisation in a regulated West African river basin” (Conservation Science and Practice, manuscript CSP2-26-0275). The study prioritises four sampled reaches of the Kainji–Jebba dam cascade, Upper Niger River, Nigeria, using fish abundance data (April 2024 to March 2025), a dam-distance threat proxy, local ecological knowledge, expert (AHP) weighting and stakeholder validation. See README.md for the file layout, the analytical pipeline and known data-quality notes. Correction: the Niger State Ministry of Livestock and Fisheries approval reference is MFAR/FISH/4/VOL.III/690 (the README in the deposited zip gives it as “MEAR/FISH/…”, which is a typographical error).