Squareback Anthias

Squareback Anthias

Pseudanthias pleurotaenia

Also known as: Square Spot Anthias

🧂 Saltwater ✌️ Peaceful 🟡 Moderate 🥩 Carnivore Schooling (3+) Reef Safe

Males are lavender-pink with a distinctive purple square patch on the flank. Females are orange-yellow. A beautiful schooling fish.

Tank Size

75 gal
minimum (125+ preferred)

Temperature

74–82°F
23–28°C

pH Range

8–8.4
water acidity

Max Size

5"
12.7 cm

Lifespan

5–7 years
typical in captivity

Swim Level

Top
preferred zone

Care Notes

Keep in harems. Requires multiple feedings per day. Provide strong water flow and open swimming space.

Feeding

Frozen mysis, enriched brine shrimp, cyclops, and marine pellets. Feed 2–3 times daily.

Compatible Tank Mates

Blue Green Chromis 3" Pink Skunk Clownfish 3.5" Skunk Clownfish 4" Orange Skunk Clownfish 4.5" Talbot's Damselfish 2.5" Lubbock's Fairy Wrasse 3" Melanurus Wrasse 5" Cleaner Wrasse 4" Yellow Coris Wrasse 5" Carpenter's Flasher Wrasse 3" Firefish Goby 3" Yellow Watchman Goby 4"

Use Caution With

Ocellaris Clownfish 3" True Percula Clownfish 3" Yellowtail Damselfish 2.5" Blue Tang 12" Yellow Tang 8" Kole Tang 7" Clarkii Clownfish 5" Tomato Clownfish 5" Scopas Tang 8" Naso Tang 18" Convict Tang 8" Azure Damselfish 2.5"

Incompatible With

Maroon Clownfish 6" Blue Devil Damselfish 3" Powder Blue Tang 9" Achilles Tang 10" Purple Tang 10" Three Stripe Damselfish 3" Domino Damselfish 5" Four Stripe Damselfish 3" Jewel Damselfish 6" Clown Tang 15" Catalina Goby 2.5" Volitan Lionfish 15"

Check Compatibility

Want to check if Squareback Anthias is compatible with a specific fish? Use our compatibility checker to build your complete tank.