On the spatial scale of dispersal in coral reef fishes O. Puebla, E. Bermingham, W.O. McMillan Microsatellite genotypes of the five species considered in this study are provided at the Genepop 3-digit format. The first line is a description of the dataset, the following lines are the locus names, followed by the genotypes. Since we considered isolation by distance between individuals the term 'Pop' separates all genotypes. The first two numbers correspond to the position of the sample along the sampling transect. The first number is always 0 because we considered a one-dimensional model. The second number corresponds to the distance from the northernmost sample (17°51.878'N 87°58.198'W) in km, measured following the Belize Barrier Reef. Each allele is coded by a three-digit number, and missing data is coded by 000.