Squareback Anthias (Male) – Tonga Special Grade
Pseudanthias pleurotaenia
Reef Compatible: Yes
Care Level: Intermediate
Disposition: Semi-aggressive
Min. Tank Size: 100 gallons
Mature Size: 8 inches
Product Specifications
| Feature | Detail |
|---|---|
| Species | Squareback Anthias (Male) |
| Grade | Tonga Special Grade |
| Size Range | 5″ to 6″ (XL) |
| Reef Compatibility | Yes |
| Recommended Tank Size | Minimum 100 gallons |
| Mature Size | Up to 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 tank.
What is the expected mature size of this fish?
The mature size of this species reaches up to 8 inches.
Is this fish aggressive toward other fish?
The disposition is semi-aggressive, so it may display mild aggression, especially during feeding or in confined spaces.


Richard Lyman –
Bought this male Squareback Anthias for my 120-gallon reef tank. It has been thriving for three months. The coloration is vibrant and it shows active swimming behavior. Good for a semi-aggressive species that doesn’t damage corals. Feeding is straightforward with high-quality flakes and frozen foods.
Jason Mackenzie –
The fish arrived healthy and active. It’s not overly aggressive, but does chase smaller fish occasionally. I’ve added some hiding spots and it seems to be adjusting well. The Tonga Special Grade is clearly visible in its color and body structure.
Jason Graham –
Perfect addition to a mid-sized reef tank. It’s calm most of the time and only shows aggression when feeding. The size is within the XL range and it grows steadily. I’m happy with the quality and the care instructions provided.