Diamond Trigger Fish Rhinecanthus Rectangulus

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Diamond Trigger – Rhinecanthus rectangulus

Overview:
The Diamond Trigger is a small, colorful marine fish renowned for its distinctive diamond-shaped patterns and bright blue, yellow, and orange markings. Its compact size and active swimming behavior make it a lively and visually appealing addition to reef aquariums.

Origin:
Native to the Indo-Pacific, commonly found on shallow coral reefs and lagoons from East Africa to the central Pacific.

Feeding:
Omnivorous – enjoys a varied diet of meaty foods such as shrimp, small fish, crustaceans, and marine pellets, supplemented with occasional algae-based foods to support health and coloration.

Tank Mates:
Suitable with peaceful to moderately semi-aggressive tank mates. Avoid very small or delicate species, as the Diamond Trigger can display territorial behavior.

Aggression:
Moderately territorial – generally peaceful in larger tanks but will defend its space in smaller aquariums.

Experience Level:
Intermediate aquarists – thrives in a mature, stable reef aquarium with good water quality and adequate hiding spots.

Water Parameters:

• Temperature: 74–79°F (23–26°C)

• pH: 8.1–8.4

• Salinity: 1.020–1.025

• Minimum Tank Size: 75+ gallons

The Diamond Trigger is a vibrant, manageable triggerfish, perfect for reef or mixed-species setups where a colorful, active species is desired.

Above images for illustration purposes only. Exact colours, patterns, and size may vary between individuals.

Please note: The livestock that is sold on our online site is not held in store at our Swell shop, or available for collection from the shop. Species sold at our Swell store will differ from ones available to order to your door.

All livestock deliveries are subject to our full Delivery Terms & Conditions, please read before ordering.