#orange-lined triggerfish

Lagoon triggerfish (Rhinecanthus aculeatus), Reef triggerfish (Humuhumunukunukuapuaʻa) (Rhinecanthus rectangulus), Grey triggerfish (Balistes capriscus), Queen triggerfish (Balistes vetula), Boomerang triggerfish (Sufflamen bursa), Orange-lined triggerfish (Balistapus undulatus), Clown triggerfish (Balistoides conspicillum)

Fishes of the World. Written by Hans Hvass. Illustrated by Wilhelm Eigener. Originally published in 1964.

You get an Orange-Lined Triggerfish

Orange-lined triggerfish (Balistapus undulatus)

The Orange-lined triggerfish is a demersal marine fish belonging to the family Balistidae, the triggerfishes. It grows up to 30 cm long. It is widely distributed throughout the tropical and subtropical waters of the Indian Ocean and the western Pacific. It inhabits coral reefs, lagoons and external reef slopes at depths up to 50 meters. The orange-lined triggerfish has a varied diet based on different benthic organisms such as algae, molluscs, sponges, hard coral tips, echinoderms, and fish. This triggerfish is diurnal, solitary, and territorial. It can be aggressive with other fish. It erects its first dorsal spine to intimidate opponents and predators.

You get an Orange-Lined Triggerfish

Orange-lined triggerfish (Balistapus undulatus)

The Orange-lined triggerfish is a demersal marine fish belonging to the family Balistidae, the triggerfishes. It grows up to 30 cm long. It has strong teeth. The body is dark green with orange lines. The male loses the lines on his snout as he matures. It is widely distributed throughout the tropical and subtropical waters of the Indian Ocean and the western Pacific. It inhabits coral reefs, lagoons and external reef slopes at depths up to 50 meters. The orange-lined triggerfish has a varied diet based on different benthic organisms such as algae, molluscs, sponges, hard coral tips, echinoderms, and fish. This triggerfish is diurnal, solitary, and territorial. It can be aggressive with other fish. It erects its first dorsal spine to intimidate opponents and predators.

An Orange-lined triggerfish,  Balistapus undulatus, from Kuredu House Reef, Maldives.

Balistapus undulatus (Tetraodontiformes - Balistidae), also known as  is a marine, reef-associated fish, found in the Indo-Pacific region.

It is one of the sexually dimorphic triggerfishes, with adult males lacking stripes on most of the snout [source].

Part 12 of my weekly series, "Reef Life of the Andaman". Scrawled filefish, Aluterus scriptus, feature first in this video. Sometimes known as a "scribbled filefish" or "scribbled leatherjacket", they are a common sight at many dive sites in Thailand. Then we encounter various members of the triggerfish family (Balistidae). The orange-lined triggerfish feeding on a sea urchin at Staghorn Reef on Racha Yai Island. Then the amazing patterns of the clown triggerfish, Balistoides conspicillum, at various sites in Thailand's Similan Islands. Schools of redtooth triggerfish, Odonus niger, adorn the reefs at the Burma Banks. We find the larger yellowmargin triggerfish, Pseudobalistes flavimarginatus, at Hin Muang. And finally we encounter the often-aggressive titan triggerfish, Balistoides viridescens, attacking my fins at Koh Bon in defence of it's nest.