Data and Code for "Functional traits and introduction pathways shaping the distribution pattern of non-native freshwater fish in China"

This repository contains the dataset and R code supporting a study on how functional traits and introduction pathways influence the distribution patterns of non-native freshwater fish in China. The data includes independent measurements of 16 morphological traits for 177 species, as well as life-history and behavioral traits synthesized from FishBase and GBIF, and categorized species grouping data based on introduction sources. The provided R scripts offer a complete pipeline for PCoA functional space construction, hypervolume analysis, and statistical testing (e.g., Chi-squared and Kruskal-Wallis tests), enabling the full reproduction of all figures presented in the manuscript.