Triggerfish Will Charge Divers to Guard Their Nest

Quick Take

• A triggerfish will charge a diver on sight, though this only happens under one specific condition that most divers never see coming. See when they charge →
• Their bites aren't the real danger. What catches divers off guard is what happens right before one. Understand their warning signs →
• Swimming away from an aggressive triggerfish the wrong way can make the situation significantly worse. Learn the safe escape →
• The number of eggs in a triggerfish nest might genuinely surprise you, and that number explains everything about their aggression. Discover the egg numbers →

It seems that all animals in nature are defensive of their babies. This includes ocean life such as the triggerfish. Their name is fitting because when you approach their nesting grounds, they quickly go into defense mode. This Instagram post by @diveivanov shows the moment a triggerfish attacks the camera of an approaching diver.

Defensive Triggerfish

Triggerfish are extremely defensive fish, not only of their nests but also of their territory. These fish are found in warm tropical oceans globally, such as around Africa and Southeast Asia. The most important part of their habitats is coral reefs. They nest in sandy areas near reefs and lagoons, as the sandy substrate offers protection from predators. While breeding season depends on the species, most species breed during the warmer months of the year. In this season, female triggerfish dig a shallow nest where they lay thousands of eggs. This is an extremely important time of their lives, and they do their best to protect their territory. This is most likely why the diver in the video above was charged by the triggerfish.

Triggerfish are diligent when it comes to protecting their nest and eggs. They will swim at divers, circle them, and raise their dorsal fins as a means to intimidate them. While not the most dangerous animals in the ocean, their bites can be painful, so it’s best to respect their space. If you are approached by a triggerfish, it’s best to remain calm and swim away slowly. Keep an eye on the fish to ensure it doesn’t launch a surprise attack. If one is persistent in following you, you can use your own diving fins as a shield. Keep an eye on it until you are outside its territory. Just like any other animal, it’s important to respect nature, including the defensive triggerfish.