Figure S1 Functional relationships among 110 freshwater fish species in Japan including native and exotic species. The numbers correspond to fish ID in Table S1 (black in bold: exotic species; grey in bold: translocated species; grey: native species). The vertical line indicates the partitioning level defining 17 functional groups (see also text).

Figure S2 Relationship between the cophenetic (or ultrametric) distance matrix derived from the dendrogram and the original distance matrix based on the Gower distance.

Table S1 Freshwater fish species evaluated in the study, including status, biogeographical realm, and historical and current distributions.

Table S2 Summary of functional groups constructed based on the dendrogram produced by UPGMA of the distance matrix calculated from the functional traits of species.

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