Blue Lined Rabbitfish (Siganus puellus)
Reef Compatible – With Caution
Care Level: Intermediate
Disposition: Peaceful
Min. Tank Size: 100 gallons
Mature Size: 15 inches
| Size | Range |
|---|---|
| S | 2″ to 3″ |
FAQ
Is the Blue Lined Rabbitfish safe to keep with corals?
With caution. It may nip at soft corals and polyps, so it is not fully reef-safe. Careful selection of tank mates and coral placement is recommended.
What is the expected growth rate of this fish?
The fish grows to a mature size of 15 inches, but the growth rate can vary depending on water conditions and diet.
Is this fish suitable for beginners?
No, this species requires intermediate care and a stable marine environment. Beginners should consider simpler species.

Justin Manning –
The Blue Lined Rabbitfish is active and peaceful in a 100-gallon tank. It does not damage corals when kept with careful placement. Feeding is easy with frozen foods. Good for intermediate reef setups.
Andrew Glover –
It’s a nice addition to a reef tank. I noticed it occasionally brushes against soft corals, so I moved them slightly away. Overall, it’s calm and healthy after a few weeks.
Caroline Anderson –
The fish is active and not aggressive, but I had to monitor its behavior closely. It’s not ideal for a small tank. I’m happy with it in a larger system with proper spacing.