Squareback Anthias (Female) – Size M (2″ to 3″)
Pseudanthias Pleurotaenia
Reef Compatible: Yes
Care Level: Intermediate
Disposition: Semi-aggressive
Min. Tank Size: 100 gallons
Mature Size: 8 inches
| Specification | Detail |
|---|---|
| Species | Pseudanthias Pleurotaenia |
| Gender | Female |
| Size (Adult) | 2″ to 3″ (M) |
| Reef Compatibility | Yes |
| Difficulty Level | Intermediate |
| Behavior | Semi-aggressive |
| Minimum Tank Size | 100 gallons |
| Mature Size | 8 inches |
FAQ
Is this anthias suitable for a reef tank?
Yes, the Squareback Anthias is reef compatible and can coexist with coral in a properly maintained reef environment.
What is the expected mature size of this fish?
The mature size of this fish is approximately 8 inches.
What is the recommended tank size for keeping this species?
A minimum tank size of 100 gallons is required for proper growth and behavior.

Natalie King –
The Squareback Anthias is active and colorful. It has adapted well in my 120-gallon tank with corals. I appreciate its semi-aggressive nature—doesn’t harm other fish but maintains its presence. Good for intermediate reef keepers.
Emma MacLeod –
It’s vibrant and adds life to the tank. I’ve had it for three months and it’s still healthy. Just make sure the tank is large enough and has plenty of hiding spots.
Steven Mitchell –
Great addition to a reef setup. The fish is active and doesn’t stress other inhabitants. It’s a bit territorial, so I keep it with larger, calm fish. Overall, a satisfying choice.