Fig. 3
From: Ponds as experimental arenas for studying animal movement: current research and future prospects

Schematic illustration of a manipulative experiment designed to investigate environmental pollution by pharmaceuticals on fish behaviour. Fish individuals are fitted with slow-release implants either containing (yellow) or not containing a contaminant (blue). Following controlled manipulations of pharmaceutical exposure, fish behaviour can be monitored using whole-pond high-resolution acoustic telemetry under different relevant ecological scenarios, including no predators, caged predators (as shown here) or freely roaming predators)