Halfmoon Lunula Trigger
Rhinecanthus lunula
| Stock | Variations | Price | Quantity |
|---|
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Shipping details →
Monday – Friday 8 AM – 9 PM
Saturday 12 PM – 4 PM
Sunday 12 PM – 9 PM
Healthy, stable animals from vetted suppliers — inspected before packing, shipped overnight. Decades of experience built this model so we can deliver premium livestock at 30%+ less than you'd pay elsewhere.
| Care Level | Moderate |
|---|---|
| Temperament | Aggressive |
| Reef Safe | No |
| Functional Benefit | Ornamental Only |
| Diet Type | Carnivore |
| Mininum Tank Size | 120 gallons |
| Max Size | 12 inches |
| Temperature | 72–78°F |
| pH Range | 8.1–8.4 |
| Specific Gravity | 1.022–1.025 |
The Halfmoon Lunula Trigger (Rhinecanthus lunula) is a “picasso”-type Rhinecanthus triggerfish known for crisp, high-contrast patterning and a distinct crescent (“halfmoon”) marking near the tail base. It’s an Indo-Pacific triggerfish associated with reef habitats, and it can reach around a foot in length in captivity.
What You’ll Observe:
- Active patrolling in open water, then weaving back into rockwork and caves
- Strong “pet fish” behavior—watching you closely and showing up quickly at feeding time
- Curious investigating of new objects and aquascape areas, including occasional “redecorating” with small rubble
- Confident feeding response for meaty foods, with many keepers favoring items like clam and squid in the rotation
How to Succeed: Provide a 120-gallon-or-larger aquarium with sturdy, stable rockwork and multiple cave-like retreats so it can cruise and reset comfortably throughout the day. Offer a varied menu of meaty marine foods (frozen and prepared), and include occasional hard-shelled items to help support natural tooth wear. In community setups, it does best with similarly robust fish that hold their own at mealtime.
Will this triggerfish “recognize” its owner over time?
Many keepers report that Rhinecanthus triggers learn the household routine quickly and will approach the glass when they see you, especially around feeding.
How do I keep the aquascape stable with a triggerfish that likes to explore?
Build rock structures on a solid base (or directly on the tank bottom) and use interlocking rock/caves so occasional nudging doesn’t shift the layout.
What’s a good way to transition it onto pellets or a staple prepared diet?
A common approach is to start with strongly scented meaty foods, then mix in high-quality pellets gradually so the fish takes both without a big routine change.
Do they make noises or other “odd” behaviors that are normal?
Triggerfish can vocalize (clicking/grunting) and may spit water at the surface during feeding-time excitement; both are widely reported, normal behaviors for the group.
What’s the simplest way to do tank maintenance without turning it into a confrontation?
Many hobbyists feed first, then do maintenance with slow movements and longer tools (like feeding tongs) so the fish stays focused and the work stays predictable.
Shipped with pure oxygen and temperature control so it arrives stress-free and ready to eat.
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