Description
Redtooth Triggerfish – Odonus niger
Odonus niger, commonly known as the Redtooth Triggerfish or Niger Trigger, is a graceful and active reef species easily recognized by its deep blue to purple body, elongated tail lobes, and distinctive red teeth that give the species its name. Unlike many of its relatives, it is generally peaceful and social when kept in spacious aquariums, making it a popular choice for both display and community setups.
Origin: Indo-Pacific – from the Maldives and Indonesia to Fiji and the Great Barrier Reef
Depth: 5–50 m (15–165 ft)
Lighting: Moderate to high (enhances deep blue coloration)
Flow: Strong, turbulent flow preferred; replicates open-reef surge zones
Tank Placement: Mid to upper water column; requires ample swimming space
Temperature: 74–80°F (23–27°C)
Salinity: 1.022–1.026 SG
pH: 8.1–8.4
Diet: Omnivorous – consumes plankton, small crustaceans, and meaty marine fare; thrives on mysis shrimp, krill, and high-quality prepared foods
Temperament: Peaceful to semi-aggressive; less territorial than most triggers but may display dominance in confined spaces
Size: Up to 30 cm (12 inches)
Care Level: Intermediate – hardy and adaptable, but requires large open swimming areas (minimum 500 L / 130 gal)
Compatibility: Suitable for large fish-only or robust reef systems; generally safe with corals but may disturb small ornamental crustaceans
