*This fish is a marine species*

The Squareback Anthias, also known as Squarespot or Squareblock Anthias are suited for the intermediate aquarist. It is a semi-aggressive species with a beautiful colour variation depending on sex. Males are predominately pink with a light-coloured rectangle on its side and a lavender belly.

The Squareback Anthias is native to many areas within the Pacific Ocean from Indonesia, Samoa and New Caledonia.

Features ofSquare Block Male:

• Pink in colour
• Grow up to 20cm
• Care level: Moderate
• Reef compatible

Tank Mate Compatibility:

Heres a list of some of the best tank mates for yourSquare block Anthias:

• Large and dwarf Angels
• Tangs
• Butterflies
• Clownfish
• Damsels

Square blockAnthias are a semi-aggressive fish. They can be kept as a school of females or within a mated pair but is important only have one male kept within the tank due to aggression. Generally, the largest female will replace the dominant male and is capable of doing so in 2-3 weeks.

Feeding:

Square block Anthias are carnivores so their diet should consist of frozen mysis and brine shrimp and copepods. Small amounts of high-quality flake foods can also be added up to 3-5 times a day. They also feed on zooplankton within the tank. These fish are grazers and do best being fed multiple times throughout the day.

Equipment:

Aquarium:

Square block Anthias are best suited to a longer aquarium as they appreciate plenty of room to swim. A minimum tank size of 370L is required when housed singly or larger for additional fish. These fish happily live in groups of up to 10 females and one male but the tank size must be increased up to 680L.

After an Aquarium for your fish? Browse ourAquarium Tank Selection here.

Heater:

Square Block Anthiasprefer water temperatures between 22C – 27C.

Looking for a Heater for your fish? Check all availableTank Heater here.

Lighting:

Replicate natural conditions with artificial lighting (8-10 hours of light every 24 hours.)

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Filtration & Water Movement:

Square block Anthias require good filtration and water quality. They are active fish, particularly when it comes to feeding and defending territory. They swim counter-current so it is recommended to have a good powerhead.

Exploreaquarium filtration products here.

Substrate:

Incorporate rubble and some live rock substrate. Replicate reef habitats and boost biological filtration with coral sand.

View our range ofaquarium substrates here.

Decorations forSquare Block Anthias:

Square block Anthias require slow acclimation and therefore need plenty of places to hide, particularly within their first week. They are reef dwellers and will hide around live rock or coral.

View our large range ofaquarium decorations here.