Heniochus Butterflyfish (Reef Safe) – Size: L 4″ to 5″
Heniochus acuminatus
Reef Compatible – With Caution
Care Level – Beginner
Disposition – Peaceful
Min. Tank Size – 75 gallons
Mature Size – 10 inches
| Specification | Value |
|---|---|
| Species | Heniochus acuminatus |
| Size (Adult) | Up to 10 inches |
| Size (Juvenile) | 4″ to 5″ |
| Compatibility | Reef compatible with caution |
| Difficulty Level | Beginner |
| Behavior | Peaceful |
| Minimum Tank Size | 75 gallons |
FAQ
Is this butterflyfish safe to keep in a reef tank?
Yes, Heniochus acuminatus can be kept in a reef tank with caution. It is generally peaceful and non-aggressive, but it may occasionally nip at soft corals or anemones. Ensure the tank has a variety of hard structures and monitor its behavior closely.
What is the expected growth rate of this fish?
This butterflyfish grows slowly. Juveniles reach 4″ to 5″ and can mature to up to 10 inches over several years. Growth depends on water quality, diet, and tank conditions.
Is this species suitable for beginner aquarists?
Yes, Heniochus acuminatus is considered a beginner-friendly species due to its peaceful nature and relatively low maintenance requirements. However, a minimum tank size of 75 gallons is required.

Abigail Wilson –
I’ve had this butterflyfish for six months now. It’s very active and stays calm in the tank. I noticed it occasionally brushes against a soft coral, so I’ve added more rock structures. Overall, it’s a great addition to my reef setup.
Joshua Morrison –
The fish arrived healthy and has been thriving. It’s peaceful and doesn’t seem to bother other tank inhabitants. I’m happy with the size and coloration. Just make sure your tank is large enough.
Emma Ball –
Perfect for a beginner reef tank. It’s colorful, active, and doesn’t show aggression. I’ve kept it with other peaceful fish and it’s doing well. The only thing I’d note is to avoid placing it near delicate soft corals.