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Halfmoon Triggerfish (Rhinecanthus lunula)

Find Halfmoon Triggerfish across reef-livestock retailers on ReefDock. Compare sources, check known pricing where available, and review care information before you buy.

Halfmoon Triggerfish
Photo: (c) Albert Kang, some rights reserved (CC BY-NC), uploaded by Albert Kang · cc-by-nc
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Where to buy Halfmoon Triggerfish

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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    Search Amazon
  • Petco

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    Search Petco

About Halfmoon Triggerfish

The Halfmoon Triggerfish is identified by its pale yellow to tan body with black reticulated markings forming a net-like pattern across the head and body. The dorsal and anal fins are distinctly rounded and often display yellow edges, and the caudal fin is lunate (crescent-shaped), giving the species its common name.

Key facts

Temperament
Aggressive
Care Requirements
• Minimum 125 gallon tank for adult behavior • Maintain 72–78°F, pH 8.1–8.3, SG 1.020–1.025 • Strong water flow; excellent filtration and protein skimming • Hardy, but aggressive toward tankmates and invertebrates; keep singly
Diet
omnivore
Care Level
Expert
Reef safety
Not Reef Safe
Diet Details
Zooplankton, small fish, marine algae (such as Laminaria and Caulerpa)
Difficulty Level
Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.
Family
Balistidae
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Min tank size
125 gallons
Appearance
The Halfmoon Triggerfish is identified by its pale yellow to tan body with black reticulated markings forming a net-like pattern across the head and body. The dorsal and anal fins are distinctly rounded and often display yellow edges, and the caudal fin is lunate (crescent-shaped), giving the species its common name.
Max Size
9

Research before you buy

ReefDock is the sister app to Reef Trak. Use Reef Trak to research and log fish, keep tank parameters organized, and maintain a complete livestock history. Log this fish on Reef Trak.

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