Humu Picasso Triggerfish – Tiny Size (1″ and Below)
Rhinecanthus aculeatus
Reef Compatible: No
Care Level: Beginner
Disposition: Aggressive
Min. Tank Size: 50 gallons
Mature Size: 12 inches
| Specification | Value |
|---|---|
| Species | Rhinecanthus aculeatus |
| Size (Adult) | Up to 12 inches |
| Size (Available) | 1 inch and below |
| Compatibility | Not reef compatible |
| Difficulty Level | Beginner |
| Behavior | Aggressive |
| Minimum Tank Size | 50 gallons |
FAQ
Is this triggerfish suitable for a reef tank?
No, this species is not reef compatible and may harm corals or other invertebrates.
What is the expected mature size of this fish?
The mature size of this triggerfish is up to 12 inches, though the available size is 1 inch and below.
Is this fish easy to care for?
Yes, it is classified as a beginner-friendly species with straightforward care requirements.

Phil Metcalfe –
Got this tiny triggerfish for my 50-gallon tank. It’s active and curious, though it does show aggressive behavior toward other fish. I’ve kept it separate from smaller species. Works well in a beginner setup with proper space and hiding spots.
Michael Brown –
Perfect for a beginner aquarist. The fish is lively and stays within the tank size limits. I noticed it grows slowly, and it’s not aggressive toward my larger fish when kept in a well-structured environment.
Madeleine Ferguson –
It’s aggressive and needs a lot of space. I had to keep it in a separate tank initially. Not ideal for small tanks or mixed communities. Still a good choice for experienced beginners with proper setup.