Common name: Orange-lined triggerfish

General information

The Orange-lined Triggerfish, scientifically known as Balistapus undulatus, is a vibrant and dynamic species popular among marine aquarists. Known for its striking coloration, this species exhibits a deep green to blue body with bright orange to yellow lines and spots, which can vary in intensity depending on the individual and its environment.

In the wild, these fish are known for their curious and sometimes aggressive nature. They have a unique ability to lock their dorsal spine as a defense mechanism when threatened, which is a characteristic feature of the triggerfish family.

Care

Orange-lined Triggerfish require a spacious aquarium with plenty of room to swim and areas to hide. They are known to rearrange the substrate and rockwork, so a well-secured aquascape is essential. This species can be aggressive, particularly towards smaller tank mates or those with similar body shapes. It's best to keep them with larger, robust fish.

A varied diet is crucial for their health, including meaty foods like shrimp, squid, and fish, as well as some vegetable matter. They are known to nip at corals and invertebrates, so they are not the best choice for a reef tank.

Reproduction

Reproduction of Orange-lined Triggerfish in the home aquarium is rare. In the wild, they are demersal spawners, laying eggs in nests which are guarded by the male until they hatch.

Habitat

Balistapus undulatus is found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. They inhabit coral reefs and lagoons, often seen at depths of up to 75 meters. They are solitary or found in pairs and are territorial in nature.