Male Zebrafish Response to PFG-2-alpha (VIDEO) RIKEN This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Male zebrafish are attracted to the pheromone PGF2α, which is released by female zebrafish during courtship. As proof that males are attracted to the pheromone itself, males swarm to it when it is placed into their tank (upper right). Credit RIKEN Usage Restrictions credit RIKEN License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.