
Source: Wikimedia Commons
Paragoniastrea australensis
A merulinid reef coral whose corallites run together into short meandering ridges. Called the lesser star coral in English, it lives in shallow Indo-Pacific water and forms hardy brown or green hemispherical colonies.
Paragoniastrea australensis is a reef-building merulinid coral of shallow Indo-Pacific waters. Milne Edwards and Haime described it in 1857, and it was long treated as Goniastrea australensis before molecular work placed it in Paragoniastrea. Colonies are hemispherical to dome-shaped, and the corallites do not fully separate: they join into short meanders that raise the surface into ridges, which distinguishes this coral from the true moon corals of the family. Colonies are usually brown or greyish green, sometimes with the valleys and ridges differently coloured. The IUCN rates it Least Concern. In the aquarium it is stable under moderate light and moderate flow and is not fussy about placement, but space must be left around it because the sweeper tentacles it extends at night damage neighbouring corals. As a scleractinian it is on CITES Appendix II.
Source: Wikipedia (CC BY-SA 4.0)
The ideal temperature for the Paragoniastrea Australensis is 24〜27℃.
Origin
Shallow water across the Indo-Pacific
Size
Colonies to several tens of cm
Temperature
24〜27℃
Mainly nutrition from symbiotic zooxanthellae, supplemented with meaty coral foods offered at night.
Sources: LiveAquaria / AlgaeBarn: Calcium Supplementation / WoRMS (World Register of Marine Species)
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Paragoniastrea australensis (Haime & Milne Edwards, 1857)
Synonyms: Goniastrea australensis (Haime & Milne Edwards, 1857), Coeloria australensis (Haime & Milne Edwards, 1857), Goniastrea benhami Vaughan, 1917
Authority databases: WoRMS
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendix II (Scleractinia spp. listed as an order) / IUCN Red List
Regulations may change. Always verify the latest information with the relevant authorities.
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LiveAquaria gives moderate lighting for this group of brain corals. Reduce the light at first and raise it to the target position over several weeks.
Medium flow. Detritus collects in the valleys between the ridges, so give it randomised flow strong enough to keep them clear.
Water 24-26C, specific gravity 1.023-1.025, salinity 33-35 ppt, KH 8-12. It consumes calcium and magnesium, so test and replenish them regularly.
Most of its nutrition comes from its zooxanthellae. It extends its polyps at night, so meaty coral food after lights-out speeds its growth.
The ridged skeleton is easily confused with Platygyra, and the coral is often traded under its former genus Goniastrea. As a scleractinian it is on CITES Appendix II and international trade requires permits.
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The ideal temperature for Paragoniastrea Australensis is 24〜27℃. Avoid sudden temperature changes and maintain a stable environment.
Paragoniastrea Australensis feeds on: Mainly nutrition from symbiotic zooxanthellae, supplemented with meaty coral foods offered at night.. Aim for a balanced diet with appropriate feeding frequency.
The price of Paragoniastrea Australensis varies significantly depending on variety, size, and individual quality. Check our market price page for the latest pricing information.
Last updated: September 16, 2026