Black Triggerfish (Melichthys indicus)
Reef Compatible – With Caution
Care Level – Beginner
Disposition – Semi-aggressive
Min. Tank Size – 100 gallons
Mature Size – 20 inches
Specifications
| Feature | Detail |
|---|---|
| Species | Melichthys indicus |
| Size (Adult) | 20 inches |
| Minimum Tank Size | 100 gallons |
| Compatibility | Reef compatible with caution |
| Behavior | Semi-aggressive |
| Difficulty Level | Beginner |
FAQ
Is this fish safe to keep with corals?
This fish is reef compatible with caution. It may damage soft corals or anemones, so careful monitoring is required.
What is the expected growth rate?
The black triggerfish grows to a mature size of 20 inches, typically reaching this size over several years.
Is it suitable for a beginner aquarist?
Yes, it is considered a beginner-level fish due to its manageable care requirements, though caution is needed with tank mates and coral placement.

Elizabeth Bell –
I bought this triggerfish for my 100-gallon reef tank. It’s active and curious, and has adapted well to the environment. I keep a close eye on it to avoid any coral damage, but overall it’s a good fit for the tank.
Keith Lee –
The fish arrived healthy and seems to be adjusting well. I’ve noticed it’s not overly aggressive, and it doesn’t harm the rockwork. Just make sure to avoid placing soft corals near its feeding area.
Joseph Brown –
Perfect for a beginner reef setup. The fish is calm most of the time and has become a regular part of the tank. I appreciate the clear care instructions provided.