Table S1. Locations at which rainbowfish phenotypes were documented.

Table S2. Species of predator at each site.

Table S3. Descriptions of principal components describing rainbowfish reflectance.

Table S4. Full permanova tables for analyses of phenotype.

Table S5. Full distlm tables for analyses of habitat, predation and phenotype.

Fig. S1. Descriptions of relative warps describing rainbowfish shape.

Fig. S2. Population means for 11 different measures of rainbowfish reflectance.

Fig. S3. Example of mean raw reflectance spectra for rainbowfish populations.

Fig. S4. Population means for the first relative warp describing rainbowfish shape.

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