Figure 2. sNMF ancestry analysis revealed 4 ancestral populations represented by fish collected in both 2014 and 2015: (a) cross-entropy plot for the number of populations in sample; (b) sNMF population ancestry barplot; and (c) PCA analysis with the colors corresponding to the sNMF-derived majority ancestry populations in panel b. Note that both years were included concurrently in the analysis. For clarity year designation is omitted as each population cluster contains both years interspersed throughout.