Siganus unimaculatus
Reef Compatible – With Caution
Care Level – Intermediate
Disposition – Peaceful
Min. Tank Size – 60 gallons
Mature Size – 8 inches
| Specification | Detail |
|---|---|
| Species | Siganus unimaculatus |
| Size (Mature) | 8 inches |
| Minimum Tank Size | 60 gallons |
| Compatibility | Reef Compatible – With Caution |
| Behavior | Peaceful |
| Difficulty Level | Intermediate |
FAQ
Is this fish suitable for a reef tank?
This fish is reef compatible but with caution. It may pose a threat to smaller polyps or soft corals, so careful monitoring is recommended.
What is the minimum tank size required?
A minimum tank size of 60 gallons is required for proper growth and stability.
How big does this fish grow?
The mature size of this fish is approximately 8 inches.


Matt Randall –
I’ve had this fish for three months in a 60-gallon tank. It’s peaceful and stays near the back wall. I noticed it occasionally nips at small anemones, so I’ve moved them farther away. Overall, it’s a good addition to a moderately maintained reef setup.
Jack Bond –
The fish arrived healthy and has been active since setup. It’s not aggressive and doesn’t eat much. I keep an eye on it near coral, and it hasn’t damaged anything yet. A bit of caution is needed, but it’s manageable.
Karen Edmunds –
I added this to my 70-gallon tank with a mix of corals. It’s calm and doesn’t stress other fish. I’ve seen it grazing on algae, which helps with tank balance. Just make sure to keep it away from delicate polyps.