Fish community dataset (occurrences, traits, niches) from the Albufera of València (1865–2025)

This dataset compiles long-term information on the fish community of the Albufera of València (Spain) from 1865 to 2025. It includes three complementary components provided in separate sheets: (1) species occurrence records (presence–absence by year, including data source), (2) functional traits for each species (reported as mean and standard deviation), and (3) realised environmental niche descriptors derived from global occurrence data (mean, lower and upper bounds, and associated standard deviations for each variable).