Klein’s Butterflyfish (Chaetodon kleinii)
Reef Compatible – With Caution
Care Level – Beginner
Disposition – Peaceful
Min. Tank Size – 50 gallons
Mature Size – 6 inches
| Size | Range |
|---|---|
| M | 2″ to 3″ |
FAQ
Is Klein’s Butterflyfish suitable for a beginner aquarist?
Yes, it is considered a beginner-friendly species due to its peaceful nature and relatively stable care requirements.
Can Klein’s Butterflyfish be kept in a reef tank?
It can be kept in a reef tank, but with caution as it may pose a threat to certain corals and invertebrates.
What is the minimum tank size recommended for this fish?
A minimum tank size of 50 gallons is recommended.


Carol Baker –
The fish is active and colorful. It has adapted well to the 50-gallon tank. I noticed it avoids touching the corals, which is a good sign. It’s peaceful and easy to observe daily.
Rose Avery –
Arrived healthy and has been active since setup. The size is within the M range. I keep a close eye on it to ensure it doesn’t interact with soft corals, but so far it’s been fine.
Sam Edmunds –
Perfect for a beginner reef setup. The fish is calm and doesn’t stress other tank inhabitants. It’s a beautiful addition to the tank and stays in one area without chasing.