Blackback Butterflyfish (Chaetodon melannotus)
Reef Compatible: Yes
Care Level: Intermediate
Disposition: Semi-aggressive
Minimum Tank Size: 50 gallons
Mature Size: 7 inches
Product Specifications
| Feature | Detail |
|---|---|
| Species | Chaetodon melannotus |
| Size (Adult) | 7 inches |
| Minimum Tank Size | 50 gallons |
| Compatibility | Reef-safe |
| Behavior | Semi-aggressive |
FAQ
Is the Blackback Butterflyfish suitable for a reef tank?
Yes, the Blackback Butterflyfish is reef compatible and can coexist with coral and other reef-safe fish.
What is the expected mature size of this fish?
The mature size of the Blackback Butterflyfish is approximately 7 inches.
What is the recommended tank size for this species?
A minimum tank size of 50 gallons is required for proper growth and well-being.

Mary Grant –
The Blackback Butterflyfish arrived healthy and active. It has adapted well to our 55-gallon tank. We’ve added some corals, and it doesn’t seem to harm them. Good for intermediate reef keepers who want a colorful, active fish.
Andrew North –
We’ve had this fish for three months now. It’s vibrant and stays in the middle of the tank. It’s semi-aggressive, so we keep it away from smaller fish. Overall, a solid addition to our reef setup.
Boris MacDonald –
The fish is very active and shows good coloration. We monitor its behavior closely, and it hasn’t shown signs of aggression toward other tank mates. A great choice for a reef tank with proper space.