Daniel Hatin is a fisheries biologist working on the St. Lawrence River near Montreal. His work with the Québec Ministry of Forest, Wildlife and Parks involves research and management of sport and commercial fish species. He is involved in large-scale monitoring of fish movement such as American eel, lake sturgeon, muskellunge and striped bass. During ship movements through the St. Lawrence he will attempt to track some fishes that have been fitted with transmitters. With a full understanding of fish movements and how they use aquatic ecosystems, conservation biologists and policy makers are able to create useful management strategies.