Three-spine Stickleback (image) University of Washington Share Print E-Mail Caption Three-spine stickleback are abundant in Alaska's freshwater lakes. Credit Jason Ching/University of Washington Usage Restrictions Photo credit required. Share Print E-Mail 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.