Global freshwater fish invasion linked to the presence of closely related species

These datasets consist of R code, data, phylogenetic tree, and shapefile, along with introductions for the datasets. They are essential for reproducing the results and figures presented in the paper "Global freshwater fish invasion linked to the presence of closely related species" (Xu et al. Nature Communications).In the study, we used a comprehensive freshwater fish occurrence database to explore the biogeographical patterns of non-native fishes and their phylogenetic correlates worldwide. We first presented global biogeographical patterns for both exotic fishes introduced across countries and translocated fishes within those countries. Subsequently, we constructed a global phylogenetic tree of freshwater fish species to quantify the phylogenetic distances between each alien or translocated fish species and native fishes in each river basin within a country. Thereby, we examined the relationship between nonnative-native phylogenetic relatedness and the likelihood of non-native fish occurrence at global, biogeographical realm, and country scales, respectively. Additionally, we calculated the taxonomic and phylogenetic diversity of native fishes in each river basin and examined whether the relationship between phylogenetic relatedness and the occurrence of non-native fish species remains robust when considering the influence of native diversity.