video: A male bluehead wrasse defends a spawning territory where he courts females (yellow). This material relates to a paper that appeared in the July 10th, 2019, issue of Science Advances, published by AAAS. The paper, by E.V. Todd at University of Otago in Dunedin, New Zealand, and colleagues was titled, "Stress, novel sex genes, and epigenetic reprogramming orchestrate socially controlled sex change." view more
Credit: John Godwin and William Tyler