Rectangulus Trigger

Rhinecanthus rectangulus

Identification	White body with a broad brown triangular patch from the eye to the pectoral fin. A bold black wedge marking on the tail base and colorful lines around the mouth give it a striking, angular appearance.
Maximum Length	Up to 12 inches (30 cm)
Origin	Indo-Pacific — Red Sea to Hawaii
Minimum Tank Size	125 gallons
Reef Compatible	Not recommended

Behavior

Also called the Wedge-tail or V-line Trigger. Similar to the Picasso Trigger in behavior and care. Bold, aggressive, and intelligent — learns to recognize its keeper. Will rearrange rockwork and attack anything entering its territory, including hands.

Diet & Feeding

Carnivore. Feeds on sea urchins, crustaceans, molluscs, and algae. Offer frozen krill, mysis, silversides, and squid.

Cautions

Aggressive trigger that can bite hard. Not reef safe. May rearrange or damage rock structure. Keep with similarly sized robust fish.