Why has my Rhodactis mushroom shrivelled up?

Mushrooms often shrivel when adjusting to new lighting, if the water flow is too strong, or if they are irritated by a passing snail or hermit crab. If it remains shrivelled for days, check your alkalinity and ensure it is not receiving direct, intense light.

Can a Rhodactis mushroom host a clownfish?

Yes, it is quite common for clownfish to adopt a large Rhodactis, particularly the 'hairy' varieties, as a surrogate anemone. The mushroom usually tolerates this well once accustomed to it.

Why did my mushroom detach and float away?

Mushroom corals will deliberately release their grip on the rock if they are unhappy with their current placement, usually because the water flow is too violent or the lighting is too bright. You can reattach it by placing it in a low-flow container with some rubble until it grabs hold again.

Do I absolutely have to feed my Rhodactis?

No, they can survive entirely on the light provided by your aquarium fixture through photosynthesis. However, feeding them meaty foods weekly will greatly increase their size, colour vibrancy, and reproduction rate.

How do I frag a Rhodactis mushroom?

They are remarkably easy to frag. You can simply cut straight through the mouth of the polyp with a sterile scalpel or razor blade to create two halves. Both halves will heal and form complete, new mushrooms within a few weeks.

MarineCoralsBeginner

Rhodactis Mushroom Coral

Rhodactis spp.

Hardy, colourful corallimorphs perfect for beginner reef keepers, offering striking textures without demanding complicated care regimes.

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Ideal Conditions

Temperature: 23 – 26 °C
pH range: 8.1 – 8.4
Hardness: 14 – 21 dGH
Salinity: 1.023 – 1.026 SG
Adult size: 5 – 15 cm
Nano Reef: 30 litres+
Lifespan: 5 – 20 years
Diet: Photosynthetic and carnivorous; absorbs dissolved organics and consumes meaty foods
Water flow: Low to moderate
Preferred setup: Stable reef environment with ample live rock or rubble for attachment

About the Rhodactis Mushroom Coral

Rhodactis mushrooms, frequently sold as hairy or bullseye mushrooms, belong to the corallimorph order. They act as a biological bridge between sea anemones and stony corals, possessing stinging tentacles but lacking a calcareous skeleton. Available in an incredible array of fluorescent colours, they are highly sought after by both beginners looking for hardy starter corals and advanced hobbyists collecting rare colour morphs.

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Is it right for your tank?

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Where Rhodactis Mushroom Coral comes from

Native range

Indo-Pacific, Red Sea

Countries / regions

Indonesia, Australia, Fiji

Habitat

Lagoon bottoms, shaded reef slopes, and shallow rubble zones

Widespread across tropical Indo-Pacific reefs, frequently collected from aquaculture facilities in Indonesia and Australia.

Similar species

Discosoma Mushroom Coral
Discosoma spp.
Ricordea Florida Mushroom
Ricordea florida
Yuma Mushroom
Ricordea yuma

We’re adding more full species guides as the catalogue grows.

Compatible tank mates

Reviewed guidance based on this species' recorded traits.

View all compatibility

Ocellaris Clownfish
Amphiprion ocellaris
Clownfish may occasionally adopt large, hairy Rhodactis mushrooms as surrogate hosts if no anemone is present, without harming the coral.
Great
Zoanthids
Zoanthus spp.
Both are excellent beginner corals, but Rhodactis can slowly expand and sting or overgrow Zoanthids if placed too closely.
Compatible with caution
Small Polyp Stony (SPS) Corals
Acropora spp.
Rhodactis carry a potent sting and will easily damage or kill delicate SPS corals if they come into physical contact.
Compatible with caution
Peppermint Angelfish
Paracentropyge boylei
Dwarf and large angelfish are notorious for nipping at fleshy polyps like mushrooms, leading to the coral remaining closed or slowly dying.
Not recommended
Raccoon Butterflyfish
Chaetodon lunula
Butterflyfish are dedicated coralivores and will rapidly consume soft corals and corallimorphs.
Not recommended

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