Blue Lined Rabbitfish (Siganus puellus)
Reef Compatible – With Caution
Care Level: Intermediate
Disposition: Peaceful
Min. Tank Size: 100 gallons
Mature Size: 15 inches
| Size | Length (inches) |
|---|---|
| L | 5″ to 6″ |
FAQ
Is the Blue Lined Rabbitfish safe to keep in a reef tank?
It is reef compatible with caution. It may nip at soft corals or anemones, so careful monitoring is required.
What is the recommended tank size for this fish?
A minimum tank size of 100 gallons is required for proper growth and stability.
How big does the Blue Lined Rabbitfish grow in maturity?
The mature size is approximately 15 inches.

Warren Oliver –
I’ve kept this rabbitfish for six months in a 120-gallon tank. It’s peaceful and active, though I had to remove a soft coral due to minor nipping. Overall, it fits well in the community and adds color to the tank.
William Kelly –
The fish is calm and easy to maintain. I noticed it occasionally brushes against a polyp, but it hasn’t caused any damage. Good for intermediate reef keepers who want a colorful, non-aggressive species.
Bernadette Carr –
Perfect size for a mid-sized tank. It’s not aggressive and stays near the bottom. I appreciate the caution note about reef compatibility—helpful for planning tank layout.