Micromussa Corals

Micromussa spp.

💧Low to Moderate Flow

☀️Low to Moderate Light

⭐Easy to Intermediate Difficulty

Micromussa corals (often still labeled “Acans” after their former placement in the Acanthastrea genus) grow as low, encrusting mats of thick, cushion-like polyps ringed in vivid reds, oranges, greens, and blues. They favor the gentler half of the reef—moderate light, gentle flow—and reward stable conditions with steady, though slower, growth. These LPS corals are a great choice for all reefers—hardy enough for beginners, yet available in a wide range of color morphs that keep experienced collectors hunting for the next piece. Micromussa shares visual similarities with true Acans and Blastomussa, so identification can be tricky: M. lordhowensis sports noticeably larger polyps than M. amakusensis, and compared with Acanthastrea echinata the polyps appear much more inflated.

Classification

Kingdom	Animalia
Phylum	Cnidaria
Class	Anthozoa
Order	Scleractinia
Family	Lobophylliidae
Genus	Micromussa
Species	Multiple, including: Micromussa lordhowensis Micromussa amakusensis Micromussa pacifica

“Micromussa” is a genus containing multiple species frequently traded under the old common name “Acan.” The most commonly available is Micromussa lordhowensis.

Quick Care Tips

Lighting

Low to Moderate

Low

Moderate

High

Flow

Low to Moderate

Low

Moderate

High

Difficulty

Easy to Intermediate

Beginner

Intermediate

Advanced

Frequently Asked Questions

Does Micromussa need target feeding?

While Micromussa can meet much of its energy needs from photosynthesis, regular target feeding of small meaty foods such as mysis, brine shrimp, or reef-safe pellets accelerates growth and enhances coloration.

Can Micromussa touch other corals?

Micromussa are known to show aggression and for using their sweeper tentacles against nearby corals. Give adequate (at least 2–3 in. / 5–8 cm) clearance from neighbors to prevent neighbors from getting stung.

Why is my Micromussa receding?

Common causes are excessive light or flow, unstable alkalinity, or harassment by pest organisms (e.g., Acropora-eating flatworms, Amphipods). Check parameters, lower the light intensity it is under, and inspect for pests.

Marketplace Overview

Current Listings: 140
Lowest Price: $19
Highest Price: $399
Median Price: $72

Shop over 140 Micromussa Corals

Top Sellers

Corals.com 75 Micromussa Listings	75 listings
Top Shelf Aquatics 16 Micromussa Listings	16 listings
World Wide Corals 16 Micromussa Listings	16 listings
Vivid Aquariums 16 Micromussa Listings	16 listings
Not a Feesh 6 Micromussa Listings	6 listings
Reef Chasers 4 Micromussa Listings	4 listings

How to Choose a Healthy Micromussa Coral

Polyp Inflation & Tissue Health:
Select pieces with continuous, unbroken flesh wrapping the entire visible skeleton. Any exposed white skeleton or dark, recessed patches can signal recent tissue loss or underlying issues.
Healed Cut Edges:
When purchasing a frag, check that the sawed or chipped edges show a light dusting of new skeleton or thin tissue. A healed rim indicates the coral had time to recover before shipping, reducing transit stress.
Clean Skeleton Base:
Look for a base free of nuisance algae and pests. A clean, off-white skeleton reduces the chance of importing pests and promotes quicker encrustation once the coral is settled.

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