siamese fighting fish galleryUsing FST scans in response to whole genome resequencing data, this locus locates to a 1. 3 Mb region on LG9 fig. 3B–D. We further sophisticated the haplotypes between elephant ear and wild type fish and annotated 55 protein coding genes during this region, of which six are known to play important roles in fin advancement and regeneration fig. 3E. Examining their expression patterns in pectoral fins at 1 month posthatching when the elephant ear mutation turns into fully apparent, we diagnosed three interesting candidate genes: potassium voltage gated channel subfamily H member 8 kcnh8, homeobox even skipped homolog protein 1 evx1, and collagen alpha 1XVI chain col16a1 that were considerably downregulated in elephant ear phenotypes compared to wild type fish fig.