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 | Value |
|---|---|
| Species | Melichthys indicus |
| Size (Adult) | 20 inches |
| Minimum Tank Size | 100 gallons |
| Reef Compatibility | With Caution |
| Difficulty Level | Beginner |
| Behavior | Semi-aggressive |
FAQ
Is the Black Triggerfish safe to keep with corals?
It is reef compatible with caution. It may damage soft corals and polyps, so it should not be kept with delicate or slow-growing reef species.
What is the expected growth rate of this fish?
The Black Triggerfish can grow up to 20 inches in maturity, though it reaches its full size over several years.
Is this fish suitable for a beginner aquarist?
Yes, it is classified as a beginner-level fish, but proper tank size and careful selection of tank mates are essential.

Diana Springer –
I bought this Black Triggerfish for my 100-gallon tank. It’s active and curious, and has adapted well to the environment. I keep an eye on it around corals, and it hasn’t damaged any yet. Good for beginners who want a more interactive fish.
Harry Payne –
The fish is healthy and lively. I made sure to keep it in a spacious tank with sturdy corals. It’s semi-aggressive, so I avoid keeping it with small or slow-growing species. Overall, a solid choice for a beginner reef setup.
Tracey Skinner –
It’s a bit more active than expected. I noticed it nipping at some soft corals after a few weeks. I’ve since rearranged the tank layout and added more robust structures. Still, it’s a good addition to a well-planned tank.