Other names: Reef triggerfish, Rectangular triggerfish, Picasso triggerfish, Humuhumu
The wedge-tail triggerfish, also known as Rhinecanthus rectangulus, is a brightly colored fish named for its striking pattern and vibrant hues. Found in tropical coral reefs of the Indo-Pacific, this species is known for its bold personality and territorial behavior. It has a distinctive shape, with a compressed body and strong jaws used for feeding on hard-shelled invertebrates. The wedge-tail triggerfish is a popular choice for marine aquariums but requires a spacious environment due to its active nature.
Other names
Reef triggerfish, Rectangular triggerfish, Picasso triggerfish, Humuhumu
Length
~15" (max 30)
Weight
~1" (max 2)
Water
Salt
Water Temp
22-30° F
Depth
20 ft
Shrimp
Squid-
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Wedge-tail triggerfish are typically found in shallow, warm waters of coral reefs
They prefer areas with plenty of hiding spots among rocks and coral, where they establish territories
Their diet consists mainly of hard-shelled invertebrates, such as crustaceans, mollusks, and sea urchins
They are solitary and can be aggressive, particularly when defending their territory from intruders
Wedge-tail triggerfish exhibit a strong territorial instinct, especially during the breeding season
They are known to pair bond, with both males and females participating in nest building and guarding the eggs
Eggs are laid in a nest on the seafloor, and the parents fiercely protect the nest from potential threats
Juveniles remain within the territory until they are mature enough to establish their own space in the reef
