Black Saddleback Clownfish (Amphiprion polymnus)
Reef compatible: Yes
Care level: Intermediate
Disposition: Semi-aggressive
Minimum tank size: 30 gallons
Mature size: 5 inches
Product Details
| Feature | Value |
|---|---|
| Species | Amphiprion polymnus |
| Size (Adult) | 5 inches |
| Size (Current) | 1.5″ to 2″ |
| Compatibility | Reef-safe |
| Aggression Level | Semi-aggressive |
| Minimum Tank Size | 30 gallons |
FAQ
Is this clownfish suitable for a reef tank?
Yes, the Black Saddleback Clownfish is reef compatible and can coexist with coral and other reef-safe species.
What is the expected mature size of this fish?
The mature size of this clownfish is approximately 5 inches.
Is this fish aggressive toward other fish?
It has a semi-aggressive disposition and may display territorial behavior, especially during feeding or breeding.


Deirdre Hudson –
The fish arrived healthy and active. It has adapted well to our 40-gallon tank. We’ve added some corals, and it’s not causing any issues. A good choice for intermediate reef keepers.
Jack Coleman –
It’s vibrant and active. We’ve had it for two months and it’s still showing interest in the tank. Just make sure the tank is at least 30 gallons and has hiding spots.
Audrey Grant –
Great addition to our reef setup. It’s not overly aggressive and seems to coexist peacefully with other fish. The size is appropriate for a mid-sized tank.