Reef Triggerfish
(Rhinecanthus rectangulus)

Descrição

The common names for *Rhinecanthus rectangulus* include “Reef Triggerfish,” “Wedge-tail Triggerfish,” “Rectangle Triggerfish,” and its Hawaiian name, “Humuhumunukunukuāpuaʻa” (often shortened to “Humu Humu”). I will use “Reef Triggerfish” as the primary common name and “Humu Humu” or “Rectangle Triggerfish” as secondary mentions.

Let’s gather the specific data points:

* **Common Name / Variant:** Reef Triggerfish (also known as Wedge-tail Triggerfish, Rectangle Triggerfish, Humuhumunukunukuāpuaʻa)
* **Maximum Size:** 30 cm (11.8 inches)
* **Origin:** Indo-Pacific, including the Red Sea, East Africa, Indonesia, Australia, Hawaii, southern Japan, and Lord Howe Island.
* **pH Range:** 7.9 – 8.5
* **Temperature:** 22-27°C (72-82°F) or 24.8-29.3°C, mean 28.3°C. I’ll go with a slightly broader, safer range like 22-28°C which covers the general consensus.
* **Lifespan:** 5-10 years
* **Swimming Zone:** Often found near the bottom, but active swimmers in open areas and around rocks. Generally benthopelagic. Mid to bottom.

Now, for the descriptive sections:

* **Overview (appearance & behaviour):** They are brightly colored, diamond-shaped fish with a “pig-like” snout, angular body, and distinctive patterns in yellow, orange, blue, black, brown, and white, with blue teeth and top lip. They have a large black wedge near the tail and may have yellow diagonal stripes. They can rapidly change color. They are known for their strong jaws and chisel-like teeth, used for crushing shells and corals. They are solitary and territorial, often making grunting sounds when threatened. They are known to re-arrange rocks and sand by blowing water from their mouth to search for food.
* **Care Level (difficulty, temperament, compatibility):** Average to Easy (for experts). They are extremely aggressive and territorial, especially towards other triggerfish and docile species. Not reef-safe; they will nip at corals and eat invertebrates. Should be kept with larger, aggressive tank mates.
* **Tank Essentials (minimum tank size & water parameters):** Minimum tank size is debated but generally agreed to be large: 100 gallons (378.5 L), 125 gallons (473 L), or even 1500 L (396 gal). For a single adult, 125 gallons seems a reasonable minimum from multiple sources, with larger being better. They need plenty of secure rockwork with caves and crevices for hiding and sleeping. They will rearrange decor.
* **Diet (feeding needs):** Omnivorous with carnivorous tendencies. Require a varied, meaty diet including krill, Mysis, shrimp, crabs, mussels, small fish, octopus, and sponges. They also need hard-shelled foods like clams to prevent their teeth from overgrowing. They also consume algae and detritus. Feed 2-3 times daily.

Let’s refine the numbers and check for consistency.
Maximum Size: Consistently 30 cm.
pH: 7.9-8.5.
Temperature: 22-27°C (72-82°F). FishBase lists preferred temp as 24.8-29.3°C, mean 28.3°C. I will go with a safe, slightly wider range, 22-28°C, which covers the common aquarium parameters for marine fish and the given ranges.
Lifespan: 5-10 years.
Tank size: 100-150 gallons (378.5-568 L) are common recommendations for adults, with some suggesting significantly larger for optimal health. Given the aggression and activity, 450L (around 120 gallons) is a solid minimum for an adult.

Looks good. I have all the necessary information.

Reef Triggerfish: A Dazzling, Dynamic Addition to Your Marine Tank!

Bring the vibrant spirit of Hawaiian reefs into your home with the magnificent Reef Triggerfish. Its striking patterns and bold personality make it an unforgettable marine inhabitant.

Overview
The Reef Triggerfish (*Rhinecanthus rectangulus*) boasts an angular, diamond-shaped body adorned with a kaleidoscope of yellow, orange, blue, black, and white markings. A distinctive black wedge near its tail and a diagonal band from eye to anal fin give it a unique appearance. Known for their powerful, chisel-like jaws, these intelligent fish actively explore their surroundings, often re-arranging substrate as they forage.

Care Level
This species is suitable for experienced aquarists due to its highly aggressive and territorial nature. It is not reef-safe and will prey on invertebrates and nip at corals. The Reef Triggerfish thrives in a fish-only with live rock (FOWLR) aquarium alongside larger, robust tank mates that can hold their own.

Tank Essentials
A minimum of 450 litres is recommended for an adult Reef Triggerfish, providing ample swimming space and territory. Secure your rockwork carefully, as these fish enjoy redecorating. Maintain stable water parameters: a temperature range of 22-28°C and a pH between 7.9 and 8.5.

Diet
As an omnivore with carnivorous tendencies, the Reef Triggerfish requires a varied diet of meaty foods like krill, shrimp, mussels, and small fish, supplemented with some algae. Offer hard-shelled items such as clams to help naturally trim their continuously growing teeth.

Why Buy From Us
When you buy Reef Triggerfish online from Corais de Vidro, you’re choosing a commitment to quality and responsible sourcing. We ensure all our healthy aquarium fish are quarantined and meticulously cared for, providing you with vibrant, thriving specimens shipped humanely to your doorstep.

• Scientific Name: *Rhinecanthus rectangulus*
• Common Name / Variant: Reef Triggerfish / Humu Humu
• Maximum Size: 30 cm
• Origin: Indo-Pacific
• pH Range: 7.9–8.5
• Temperature: 22–28°C
• Lifespan: 5–10 years
• Swimming Zone: Mid | Bottom

Add this captivating Reef Triggerfish to your advanced marine setup today!