This study investigates interactions between titan triggerfish (Balistoides viridescens) and tiger sharks (Galeocerdo cuvier) at a provisioning site in Fuvahmulah, Maldives, to assess how human activities may influence predator–prey dynamics on coral reefs. Opportunistic video footage from provisioned shark dives was analyzed to document aggressive behaviours, with particular attention to biting and chasing events initiated by triggerfish. The recordings showed that titan triggerfish frequently targeted the caudal (tail) region of tiger sharks, often provoking additional aggressive responses.

 

Despite the proximity of provisioned food, statistical analyses found no significant link between where the interaction occurred relative to the bait and the type or severity of the behaviour. This indicates that the triggerfish’s aggression is likely driven by territoriality rather than food competition. Overall, the study highlights the importance of managing shark provisioning activities carefully to avoid unintentionally altering natural species interactions and to help maintain ecological balance in coral reef ecosystems.