Rectangle Trigger Med

About this fish

Rectangle Trigger Med is a home-saltwater aquarium triggerfish commonly identified as Rhinecanthus rectangulus. This species is known for its strong jaws and confident personality, making it a standout fish for aquarists who want a bold, interactive centerpiece. In practical terms, it’s a predatory marine fish best used in a carefully managed tank where you plan compatible tankmates and feeding from day one.

Features:

• Bold, intelligent behavior with strong jaws—great for aquariums with a compatible, thoughtful stocking plan
• Best suited to a fish-only setup with live rock and robust tankmates, since triggers can be aggressive
• May eat many invertebrates, so choose cleanup crews and tankmates carefully
• Offer a meaty diet; feeding foods like krill, squid, and clam helps support proper tooth wear
• Acclimate slowly when it arrives and provide a quiet spot so it can settle and reduce stress
• Our stock changes often, so availability and exact incoming condition can vary—ask us for current details before ordering

Specifications:

• Shop product name: Rectangle Trigger Med
• Scientific name (verified): Rhinecanthus rectangulus
• Group guidance: Triggerfish; generally better suited to fish-only or very carefully planned reef-adjacent tanks due to predatory behavior
• Temperament guidance: Often aggressive; plan tankmates accordingly
• Diet guidance: Meaty foods such as krill, squid, and clam on the shell
• Husbandry start: Slow acclimation; allow a quiet resting area to help it settle