Undulated Trigger

Balistapus undulatus


(0 Reviews)

Undulated Trigger

Undulated Trigger

Balistapus undulatus


(0 Reviews)

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Care Facts

Size: 2.5-3.5 inches
Care Level: Easy
Temperament: Semi-aggressive
Reef Safe: No
Diet: Carnivore
Origin: Indian Ocean
Acclimation Time: 3+ hours
Coral Safe: Monitor
Invertebrate Safe: No
Minimum Tank Size: 75 gallons
The Undulate Trigger, Balistapus undulatus, also known as the Orange-Lined Trigger, Orange-Tailed Trigger, and Orange Tailed Triggerfish, features a characteristic orange tail with yellow-orange vertical striping patterns.. Sometimes, the Undulate Trigger can make an audible grunting sound. It is hardy, shy, and can be quite aggressive. They can bite fingers during feeding so be careful. The Undulate Trigger eats a varied carnivorous diet and will also chew or carry on small rocks in the tank. When frightened, it will wedge itself into the live rock crevasses. They mainly prey on crustaceans and small fish, and can nip at corals so they are not reef safe. Feed them 1-2 times per day a diet of clams, krill, shrimp, and silversides to keep them healthy and keep their teeth properly trimmed.


The Undulated Triggerfish (Balistapus undulatus): A Captivating Enigma for Saltwater Marine Aquariums

The Undulated Triggerfish, scientifically known as Balistapus undulatus, emerges as a captivating and enigmatic presence within saltwater marine aquariums. Thriving in the warm waters of the Indo-Pacific region, stretching from the Red Sea to the western Pacific, this species adds a touch of intrigue to the vibrant tapestry of coral reefs, rocky substrates, and coastal shallows.

Habitat and Compatibility with Reefs

The Undulated Triggerfish finds its habitat among coral-rich environments, rocky formations, and shallow coastal waters. Understanding its compatibility with reef ecosystems requires careful consideration. While they may not be reef safe due to their potential to nip at corals and ornamental invertebrates, their captivating appearance and behavior make them sought-after additions to marine setups.

Size and Coloration Changes from Juvenile to Adult

From their juvenile form, featuring a striking pattern of alternating blue and yellow lines, to their mature appearance characterized by an undulating body and bold markings, the Undulated Triggerfish undergoes remarkable transformations as it matures. This evolution showcases their journey from youth to adulthood.

Lifespan of the Undulated Triggerfish

Boasting an engaging presence, the Undulated Triggerfish grows to approximately 10 to 12 inches. Their lifespan of up to 10 years promises enthusiasts a captivating and enduring marine companion, ensuring a lasting impact on your aquatic realm.

Diet and Feeding of the Undulated Triggerfish in Captivity

Recreating the Undulated Triggerfish's diet in captivity is pivotal for their health and vibrancy. In the wild, they feed on various marine organisms, including crustaceans, mollusks, and smaller fish. A diet comprising high-quality marine-based pellets, frozen seafood such as shrimp and squid, and occasional offerings of live or frozen invertebrates mirrors their natural feeding behaviors in captivity.

Aquaculture and Availability of the Undulated Triggerfish

As of now, widespread aquaculture efforts for the Undulated Triggerfish remain limited, with most individuals available to hobbyists being wild-caught. It's essential to choose suppliers that prioritize ethical collection practices and responsible handling, ensuring the well-being of these captivating creatures.

Compatibility with Other Fish and Invertebrates for the Undulated Triggerfish

Understanding the Undulated Triggerfish's temperament is essential when considering tank mates. Due to their occasionally aggressive behavior and territorial tendencies, opt for similarly robust companions who can hold their ground in the presence of this captivating species.

Temperament and Tank Requirements for the Undulated Triggerfish

The Undulated Triggerfish's unique appearance matches its engaging demeanor. To cater to their needs, a tank with a minimum capacity of 180 gallons is recommended. Providing ample hiding spots, live rock formations, and crevices replicates their natural habitat and allows them to establish territories.

Compatible Tank Mates for the Undulated Triggerfish

When selecting suitable companions for the Undulated Triggerfish, opt for species that share a similar size and disposition. Compatible tank mates often include the Picasso Triggerfish (Rhinecanthus aculeatus), the Niger Triggerfish (Odonus niger), the Hippo Tang (Paracanthurus hepatus), the Coral Beauty Angelfish (Centropyge bispinosa), and the Bluehead Wrasse (Thalassoma bifasciatum).

Other Common Names for the Undulated Triggerfish

The Undulated Triggerfish may also be recognized by its alternate common names, including the Orange-lined Triggerfish and the Orange-lipped Triggerfish.

Why Choose the Undulated Triggerfish from Saltwaterfish.com

Enquiring the Undulated Triggerfish from Saltwaterfish.com offers enthusiasts an exclusive avenue to introduce a captivating and visually striking marine inhabitant into their aquarium. As a trusted source for marine life, Saltwaterfish.com upholds the health and well-being of the species it provides. The Undulated Triggerfish arrives in impeccable condition through stringent collection and acclimatization protocols, ensuring its seamless integration into your marine ecosystem. Investing in the Undulated Triggerfish from Saltwaterfish.com affirms your commitment to excellence and the meticulous care of your saltwater aquarium.


Reviewed by: Trevor Cavanaugh on Feb. 15, 2024


Reviewed by: Lynn Adams on Nov. 22, 2023


Reviewed by: Kelly Ford on Sept. 28, 2023

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