Tri Colour Anthias

Tri-Colour Anthias (Pseudanthias rubrizonatus)

The Tri-Colour Anthias is a stunning and relatively uncommon reef fish, prized for its bold colours and active shoaling behaviour. Its body glows with a mix of pink, orange, and violet hues, with males showing particularly intense colouration. Like other anthias, it is a midwater planktivore, constantly swimming and feeding from the water column. In the aquarium, this species adds both beauty and energy, making it a highlight of larger reef tanks.

Common Name:
Tri-Colour Anthias

Scientific Name (Latin):
Pseudanthias rubrizonatus

Maximum Size:
Up to 12 cm (in captivity)

Water Type:
Marine

Origin / Natural Habitat:
Indo-Pacific region, including reefs around Indonesia, the Philippines, and Papua New Guinea. Typically found in shoals above reef slopes and drop-offs at depths of 20–50 metres.

Water Parameters:

Temperature: 24–27°C

pH Range: 8.1–8.4

Salinity: 1.023–1.025 SG

Temperament:
Peaceful to semi-aggressive. Best kept in harems (one male with several females). Males may become territorial with rivals or other anthias species.

Diet:
Planktivore. Needs multiple small meals daily of fine meaty foods such as mysis shrimp, copepods, cyclops, enriched brine shrimp, and marine micro-pellets.

Minimum Tank Size:
350 litres (larger if keeping groups)

Behaviour & Activity:
Constant midwater swimmers, adding vibrant colour and activity. As with other anthias, females can transition to males if the dominant male is lost.

Special Requirements or Care Notes:

Requires frequent feeding due to high metabolism.

Strong water movement is beneficial, replicating their natural habitat.

Best housed in a mature reef system with ample swimming space.

Suitable for:
Intermediate to experienced marine aquarists.

Availability:
Occasional in trade – less common than other anthias species.