
Source: Wikimedia Commons
Lobactis scutaria
The only species in its genus, a solitary fungiid. The disc is round to elongated and the tentacular lobes standing on the septa contrast with the body colour. It reaches 17 cm and lives free on sand or coral rubble.
Lobactis scutaria, long known as Fungia scutaria, is a solitary fungiid and the only species in its genus. It lives free rather than attached, is discoid to elongated in outline, and the polyp reaches 17 cm. Narrow septa line the corallite, each carrying a tall tentacular lobe near its origin; the septal teeth are unlobed, and outside the corallite the ribs continue as costae bearing rows of tiny spines. The underside keeps a scar from where the juvenile detached from the seabed. Colour is brown, yellowish or blue, usually with contrasting tentacular lobes. It is common on sand and coral rubble on upper reef slopes with strong wave action, often alongside Fungia species. It is hermaphroditic, releasing eggs and sperm through the mouth to form planula larvae. As a scleractinian it is on CITES Appendix II, and the IUCN rates it Least Concern.
Source: Wikipedia (CC BY-SA 4.0)
The Lobactis (Fungia Scutaria) grows to Up to about 17 cm.
The ideal temperature for the Lobactis (Fungia Scutaria) is 24〜26℃.
Origin
Indo-Pacific, mostly on sand or coral rubble on upper reef slopes where there is considerable wave action.
Size
Up to about 17 cm
Temperature
24〜26℃
Sources: LiveAquaria (Plate Coral, Long Tentacle/クサビライシ科の飼育値) / AlgaeBarn: A Quick Guide to LPS and SPS / 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: Lobactis scutaria (Lamarck, 1801)
Synonyms: Fungia scutaria Lamarck, 1801
Authority databases: WoRMS
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendix II (Scleractinia spp. listed as an order) / IUCN Red List (via SeaLifeBase)
Regulations may change. Always verify the latest information with the relevant authorities.
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Carnivorous, catching plankton, small shrimps and fish with its tentacles. It feeds by day as well as by night.
Moderate light is enough; LiveAquaria lists fungiid plate corals as moderate-light corals. Stronger light deepens the colour but is not required.
Set it mouth-up on a fine sand bed. AlgaeBarn recommends low to moderate flow for fungiids. It inflates to nearly twice its size, so leave room around it.
Water 24-26C, specific gravity 1.023-1.025 (salinity 33-35 ppt), pH 8.1-8.4, KH 8-12, calcium 380-440 ppm, magnesium 1300-1400 ppm.
Distinctly carnivorous and feeding by day as well as by night. It takes brine shrimp, micro-plankton and chopped seafood placed near the mouth.
Its tissue is thin and it rots if buried or left upside down. Its sweeper tentacles damage neighbours, so leave clearance. As a scleractinian it is on CITES Appendix II and international trade requires permits. The Japanese name kusabiraishi is sometimes also applied to Ctenactis echinata, so the common name alone does not distinguish them. That species grows elongate at roughly 25 cm long and 10 cm wide and needs correspondingly more floor space, so confirm the scientific name before deciding on placement.
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 Lobactis (Fungia Scutaria) is 24〜26℃. Avoid sudden temperature changes and maintain a stable environment.
Lobactis (Fungia Scutaria) typically reaches Up to about 17 cm as an adult. Size may vary depending on care conditions and individual genetics.
Lobactis (Fungia Scutaria) feeds on: Carnivorous, catching plankton, small shrimps and fish with its tentacles. It feeds by day as well as by night.. Aim for a balanced diet with appropriate feeding frequency.
The price of Lobactis (Fungia Scutaria) varies significantly depending on variety, size, and individual quality. Check our market price page for the latest pricing information.
Last updated: September 16, 2026