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Rhodactis Mushroom

Rhodactis inchoata · also called Hairy Mushroom, Bullseye Mushroom, Tonga Blue Eye Mushroom

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Rhodactis Mushroom

Rhodactis inchoata is a hardy, fast-spreading corallimorph (mushroom 'coral') prized for fluorescent bullseye-patterned discs with short bubbly tentacles. One of the most forgiving beginner photosynthetic invertebrates in the reef hobby.

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Quick facts

SizeIndividual polyps 1-2 in (2.5-5 cm) across; readily forms spreading colonies of dozens of polyps
Lifespan10–25 years
Social needsgroup
Native regionIndo-Pacific reefs (Tonga, Fiji, Solomon Islands, Indonesia)
OriginOld World
Climate🌴 Tropical
Water type🌊 Marine
FamilyDiscosomidae
GenusRhodactis

Part of the Mushroom Corals

Soft, disc-shaped corallimorphs (Rhodactis, Discosoma, Ricordea, and bounce morphs) that carpet rockwork in fluorescent colors. Hardy, low-light, low-flow, and among the best beginner reef invertebrates.

Bounce MushroomDiscosoma (Red Mushroom)Ricordea mushroomRicordea Yuma

Habitat & space requirements

From the minimum an animal needs to be kept humanely, up to the ideal setup. Bigger is almost always better — minimums are floors, not targets.

Photo coming soon
Minimum

Stable nano reef

10+ gal / Alk 8-9 / NO3 5-15

Mushroom corals are the easiest "coral" for new reefers — low light, low flow, tolerate higher nutrients. Place low. Detaches/walks if unhappy. Rhodactis mushrooms have textured/hairy caps; will eat small fish if very large — give space.

Photo coming soon
Recommended

Established 30-gal reef

30+ gal cycled 6+ mo

Established reef with shaded/low light + low flow. Frag-friendly and spreads.

Photo coming soon
Ideal

Mature reef + dedicated mushroom garden

75+ gal / display rock with named morphs

Mature reef with named mushroom morphs in a shaded zone — Bounce, Yuma, Ricordea morphs reach show colour with stable params. Rhodactis mushrooms have textured/hairy caps; will eat small fish if very large — give space.

Life & growth stages

How this animal changes through its life — each stage often has its own care, diet and space needs.

Photo coming soon
Planula larva

Corals begin as a free-swimming planula larva released into the water column after spawning or brooding. The tiny, ciliated larva drifts and swims until it finds suitable hard substrate to settle on.

Photo coming soon
Single polyp

Once settled, the larva metamorphoses into a single founding polyp that secretes a calcium-carbonate (or proteinaceous) base and extends a ring of tentacles to feed. Reef-building corals begin laying down skeleton at this stage.

Mature colony stage
Mature colony

The founding polyp buds asexually into a colony of many genetically identical polyps, building the species' characteristic growth form — branching, plating, encrusting, or massive. A mature colony can reproduce and contributes to reef structure.

Color & pattern variants

Natural variants occur in the wild; selectively bred (man-made) variants were developed in captivity.

Natural
Tonga Blue Eyerepresentative

Tonga Blue Eye

Classic morph with a vivid blue or teal fluorescent center disc ringed by green — the most recognizable R. inchoata look.

Bullseye / Watermelonrepresentative

Bullseye / Watermelon

Concentric red/green/orange rings radiating from the mouth, resembling a target or watermelon pattern.

WWC OG Bounce Mushroomrepresentative

WWC OG Bounce Mushroom

Ultra-rareBeginner

The original blue-green-based Rhodactis covered in large orange-red inflated vesicles ("bounces"). The gold-standard bounce that started the craze and still commands among the highest prices in the hobby.

Tip: Place low in the tank on the sandbed or a low rock under low-to-moderate light (PAR ~75-150) with gentle flow; too much light or harsh flow shrinks and flattens the vesicles. Target-feed small meaty foods about once a week.

WWC Sunkist Bounce Mushroomrepresentative

WWC Sunkist Bounce Mushroom

RareBeginner

A blue-green-based Rhodactis similar to the OG Bounce but with smaller, fully bright-orange bubbles giving a citrus 'sunkist' look. One of the most recognizable named bounces.

Tip: Keep under low-to-moderate light (PAR ~50-120) on the lower third of the tank with gentle flow so the orange vesicles stay inflated and saturated. A slightly nutrient-rich tank helps the bubbles develop.

WWC King Julius Bounce Mushroomrepresentative

WWC King Julius Bounce Mushroom

RareBeginner

A premium WWC bounce with a colorful base and dense raised vesicles; mother colonies have grown to several inches across. Named in the WWC 'King Julius' line.

Tip: Give it a stable low-flow, lower-light spot (PAR under ~100); mature colonies will slowly carpet a low rock, so leave room around it. Weekly target feeding speeds growth.

WWC Biohazard Bounce Mushroomrepresentative

WWC Biohazard Bounce Mushroom

RareBeginner

A toxic-green and orange/blue bounce with a striking high-contrast 'hazard' color split across its inflated vesicles. One of the older, well-known bounce varieties.

Tip: Low light and low-to-moderate flow keep the neon-green coloration from washing out; place on the sandbed or a low ledge.

TSA Mardi Gras Bounce Mushroomrepresentative

TSA Mardi Gras Bounce Mushroom

RareBeginner

A festive multicolor bounce mixing purple, green, and orange tones across a colorful base in a 'Mardi Gras' palette.

Tip: Low-to-medium flow and low-to-moderate light on the sandbed or a low rock keeps the multicolor coloration bright and the vesicles inflated.

TSA Bozos Revenge Bounce Mushroomrepresentative

TSA Bozos Revenge Bounce Mushroom

RareBeginner

A clownish, high-contrast Rhodactis bounce with vivid warm vesicles, named 'Bozos Revenge' for its loud coloration. Considered a grail-grade piece.

Tip: Keep it low and lightly shaded with gentle flow; raise light slowly only if color holds.

Powerball Bounce Mushroomrepresentative

Powerball Bounce Mushroom

RareBeginner

A top-grade bounce with large primary vesicles surrounded by smaller ones in a fusion of neon green, molten orange, and deep blue tones.

Tip: Low-to-moderate light (PAR ~70-120) and gentle flow on a stable low rock; large vesicles deflate quickly under strong, direct flow.

CA Orange Crush Bounce Mushroomrepresentative

CA Orange Crush Bounce Mushroom

UncommonBeginner

A bright, fully orange-vesicled Rhodactis bounce with a clean 'orange crush' soda coloration over a contrasting base.

Tip: Low-to-moderate light keeps the orange saturated; place low with gentle flow.

Frankenstein Bounce Mushroomrepresentative

Frankenstein Bounce Mushroom

RareBeginner

A blue-based bounce with teal/green frilly tentacles and chunky, flesh-pink outer vesicles giving a 'stitched-together' Frankenstein look; a companion 'Bride of Frankenstein' morph also exists.

Tip: Low light, low flow, low placement; let the heavy vesicles inflate undisturbed.

Neptune Bounce Mushroomrepresentative

Neptune Bounce Mushroom

RareBeginner

A powdery blue-and-teal base with puffy, sand-colored bubbles. Notable because it is a Discosoma-type bounce rather than the typical Rhodactis, making it stand out among bounces.

Tip: Low light and low-to-moderate flow keep the pastel blue base from bleaching; place on the sandbed or a low rock.

Lava Bounce Mushroomrepresentative

Lava Bounce Mushroom

UncommonBeginner

A red-orange 'lava' colored Rhodactis bounce with molten-looking vesicles over a darker base.

Tip: Low-to-moderate light and gentle flow on a low rock keeps the warm lava tones rich.

Mellow Yellow Bounce Mushroomrepresentative

Mellow Yellow Bounce Mushroom

UncommonBeginner

A soft yellow-vesicled Rhodactis bounce with a mellow, pastel-yellow palette across the bubbles.

Tip: Low light and low flow; yellow bounces can wash out fast under bright light, so keep it shaded and low.

Brass Monkey Bounce Mushroomrepresentative

Brass Monkey Bounce Mushroom

RareBeginner

A metallic gold-to-brassy toned Rhodactis bounce with warm, coppery vesicles.

Tip: Low-to-moderate light and low flow on a lower rock to keep the metallic tones from fading.

Superman Bounce Mushroomrepresentative

Superman Bounce Mushroom

UncommonBeginner

A blue-based Rhodactis with bright red-orange highlights giving the classic blue-and-red 'Superman' contrast; sold both as a bullseye-type and as bouncing specimens.

Tip: Low-to-medium light and low flow; the blue base holds best when not over-lit.

Red Bullseye Rhodactis Mushroomrepresentative

Red Bullseye Rhodactis Mushroom

CommonBeginner

The classic non-bounce form of Rhodactis inchoata: a deep red disc with a contrasting central mouth ('bullseye') and short pseudotentacles. The wild base type from which bounces can emerge.

Tip: Low-to-moderate light and low flow on the sandbed or a low rock; under blue-heavy light it can develop enlarged pseudotentacles.

Green Bullseye Rhodactis Mushroomrepresentative

Green Bullseye Rhodactis Mushroom

CommonBeginner

A green-disc form of Rhodactis inchoata with a contrasting bullseye center and short pseudotentacles; often fluoresces under actinic light.

Tip: Low-to-moderate light and gentle flow; blue-spectrum light brings out the green fluorescence.

Purple Camo Bullseye Rhodactis Mushroomrepresentative

Purple Camo Bullseye Rhodactis Mushroom

UncommonBeginner

A Rhodactis inchoata bullseye with a mottled purple/maroon/blue/green 'camo' patterning across the disc, more colorful than the plain wild types.

Tip: Low-to-moderate light and low flow; keep it on a lower rock so the purple mottling stays saturated.

Selectively bred (man-made)
JF Raunchy Red Bounce Mushroomrepresentative

JF Raunchy Red Bounce Mushroom

RareBeginner

A blue base topped with raised red frills and red bubbles, with outer tentacles that flash orange, yellow, or red depending on lighting. A bold red-dominant bounce.

Tip: Low-to-moderate light (PAR ~80-150) and low-to-moderate flow; keep it out of the highest-light zones to preserve the red frills.

JF Orange Swirl Mushroomrepresentative

JF Orange Swirl Mushroom

UncommonBeginner

A Rhodactis with swirling orange and contrasting tones across the disc, named for its marbled 'swirl' pattern rather than classic round bounces.

Tip: Medium light and medium flow per the vendor listing; a mid-to-low rock placement keeps the swirl pattern vivid.

JF Mayhem Mushroomrepresentative

JF Mayhem Mushroom

UncommonBeginner

A chaotic, multicolor Rhodactis with a busy mix of warm and cool tones across the disc, named 'Mayhem' for its disorderly coloration.

Tip: Medium light and low flow per the vendor listing, on a lower rock; let it acclimate before moving it.

JF Minecraft Mushroomrepresentative

JF Minecraft Mushroom

UncommonBeginner

A Rhodactis (cited as R. indosinensis) with a blocky, pixelated color pattern that inspired the 'Minecraft' name; it 'bounces' by growing longer, branchier vesicles into a lightning-bolt shape rather than round bubbles.

Tip: Low-to-moderate light and gentle flow; because it elongates rather than forms round bubbles, give it open low space to spread.

Cornbred Forest Fire Orange Bounce Mushroomrepresentative

Cornbred Forest Fire Orange Bounce Mushroom

RareBeginner

A fiery orange Rhodactis bounce with red-orange vesicles evoking a 'forest fire,' carrying Cornbred Corals' naming. Noted for holding its bubbles even under stronger light.

Tip: Low-to-moderate light and low flow; the warm coloration intensifies under blue-heavy light without being blasted.

Godzilla Bounce Mushroomrepresentative

Godzilla Bounce Mushroom

Ultra-rareIntermediate

A prized Rhodactis bounce morph with a green base studded with raised, bubble-like vesicles that glow bold orange, giving the inflated bounced texture collectors chase.

Tip: Place low-to-mid on the rockwork under moderate PAR (~75-120) with gentle, indirect flow so the vesicles inflate rather than getting blasted flat.

Habitat & enclosure

A nano-friendly species suited to mature reef tanks of **10 gal (38 L) or larger**. Stable, slightly aged water with some nutrients is tolerated better than ultra-low-nutrient SPS conditions. Target water parameters: temperature **75-80 F (24-27 C)**, salinity **1.024-1.026 SG**, pH **8.1-8.4**, alkalinity **8-11 dKH**, calcium **400-450 ppm**, magnesium **1250-1350 ppm**, nitrate up to ~10-20 ppm. Place on low rockwork or a frag plug in the lower third of the tank.

Substrate

Prefers to anchor to **live rock or a ceramic/coral frag plug** rather than sand. Place fragments in a low-flow rubble pocket so the pedal disc can grip; once attached it is firmly fixed. Not a sand-dwelling species — avoid burying it.

Equipment & setup

Standard reef setup: heater, quality saltwater, protein skimmer optional but helpful, and **moderate reef LED/T5 lighting (PAR ~50-120)** — low to moderate. Low to moderate flow from a wavemaker. No special equipment needed; tolerates lower-end lighting that would not satisfy LPS/SPS.

Diet

Largely **photosynthetic** via symbiotic zooxanthellae, so adequate light supplies most energy. Will capture and absorb meaty foods — spot-feed small amounts of finely minced mysis, brine, or coral foods 1-2x weekly to boost growth and color. Also absorbs dissolved organics, which is why it thrives in slightly nutrient-rich tanks.

Behavior & temperament

Peaceful and **non-aggressive** — has no sweeper tentacles and does not sting neighbors, though a dense mat can overgrow and shade slower corals. Detaches and 'walks' or balloons off to relocate if unhappy with flow or light. Safe to handle with gloves; it produces mild mucus only. An easy, low-conflict beginner coral.

Health

Very disease-resistant. Signs of stress: staying closed/deflated, shrinking, or detaching — usually caused by too much light or flow, or poor water quality. Bleaching (loss of color) indicates excess PAR; move lower or shade. If a polyp detaches and tumbles, corral it in a low-flow container with rubble until it re-attaches.

Tips, DIY & hacks

To propagate, cut a healthy mushroom in half through the mouth with a sharp sterile blade or let it pedal-laceration split naturally — both heal and form two polyps. Frag by placing cut pieces in a perforated container with rubble in low flow. Keep it away from valuable SPS/LPS so the spreading mat cannot overtake them.

Sources

  1. Rhodactis Mushroom Coral Care - Tidal Gardens (care guide)
  2. A Guide To Aquarium Mushroom Corals - Quality Marine (retailer guide)
  3. Wikipedia: Rhodactis Mushroom (wiki)