Eight Band Butterflyfish (Chaetodon octofasciatus)
Reef compatible, suitable for intermediate aquarists. This peaceful species is ideal for marine aquariums with proper conditions.
Key Features:
- Reef compatible – does not harm coral or invertebrates
- Care level – intermediate
- Disposition – peaceful
- Minimum tank size – 30 gallons
- Mature size – up to 4.5 inches
- Size available – Tiny (1″ and below)
| Parameter | Value |
|---|---|
| Scientific Name | Chaetodon octofasciatus |
| Size (Adult) | 4.5 inches |
| Minimum Tank Size | 30 gallons |
| Compatibility | Reef safe |
| Behavior | Peaceful |
FAQ
Is the eight band butterflyfish safe to keep with corals?
Yes, the eight band butterflyfish is reef compatible and does not pose a threat to corals or invertebrates.
What is the expected mature size of this fish?
The mature size of the eight band butterflyfish is up to 4.5 inches.
Is this fish suitable for beginners?
No, this fish has an intermediate care level and requires a properly maintained 30-gallon tank with stable water parameters.

Ruth Glover –
The fish arrived healthy and active. It has been in my 30-gallon tank for two months and is thriving. The coral setup is intact, and it doesn’t seem to disturb any of the invertebrates. A great addition to a reef tank.
Una Bell –
I was cautious about adding a butterflyfish due to its size and care needs. This one is peaceful and has adapted well to the tank. It’s a good fit for a reef environment with proper water parameters.
Benjamin Manning –
The tiny size makes it perfect for a smaller reef tank. It’s active and curious, and it doesn’t eat any of the coral. I’m happy with the purchase and the fish’s behavior.