1. Department of Integrative Biology, University of Texas, Austin, TX 78712, USA
2. Milwaukee Public Museum, Milwaukee, WI 53233, USA
3. Institute of Ecology and Evolution, University of Bern, Bern 3012, Switzerland
4. Developmental Biochemistry, University of Würzburg, Würzburg97074, Germany
5. Department of Chemistry and Biochemistry, The Xiphophorus Genetic Stock Center, Texas State University, San Marcos, TX 78666, USA