By Bob Goemans
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Family Discosomatidae

Rhodactis indosinensis

Carlgren, 1943

Elephant Ear Mushroom, Hairy Mushroom

Likely Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Central Indo-Pacific Ocean to Australia.

Natural Environment: Inhabits reef slopes and reef shallows, sometimes where the nutrient level is more concentrated, i.e., bays, lagoons, and boat channels.

General Husbandry: Sometimes called "Elephant Ear Mushroom Corals" because of their larger size.

Moderate light and currents suit them well!

Provide enough space between them and their neighbors!

They can be fed small pieces of fish/shrimp flesh.


    Kingdom: Animalia

    Phylum: Cnidaria

    Class: Anthozoa

    Subclass: Hexacorallia

    Order: Corallimorpharia

    Family: Discosomatidae

    Genus: Rhodactis

FYI: Easily propagated from cuttings.

Experience Level: Beginner

Diet: Photosynthetic/Carnivore/Plankton feeder

Temperament: Slightly aggressive

Aquarium Environment: Reef or fish-only aquarium

Coral Safe:With caution

Fish Safe: Yes

Invertebrate Safe: Yes

Acclimation Time: 30 minutes+

Aquarium Hardiness: Hardy

Calcium (Ca): 380 - 430 mg/l

Alkalinity: 2.5 - 3.0 meq/l

Phosphate (PO4): <0.05 mg/l

Magnesium (Mg): approx. 1350 mg/l (relate to specific gravity)

Strontium (Sr) 8 - 10 mg/l

Temperature Range: 72 - 83°F (22 - 28°C)

Minimum Tank Size: 30 gallons

Lighting: PAR 200 - 300+

Water Movement: WM 1 - 2

Specific Gravity: 1.023 - 1.025

pH: 8.0 - 8.4

Iodine/Trace Elements Monitor/as necessary to maintain quality seawater.

 Rhodactis indosinensis (Elephant Ear Mushroom, Hairy Mushroom)
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