Zebrafish-experiments

1. Experiment #1 - Predator Avoidance: A dark circle grows larger as it follows the fish, simulating a predator. 2. Experiment #2 - Prey Capture: Small bright circles move around the zebrafish, simulating prey. 3. Experiment #3 - Optic Flow: Projected black-and-white bars induce the fish to swim, change direction or swim faster. Illustration by Chris Philpot