Rainbow Acan
Micromussa lordhowensis, an acan. Beginner to keep, typical PAR 50–120, low to moderate flow.
Also sold as Acan Lord, Rainbow Lord.
A look, not a line. It names a colour or grade, so unrelated corals can carry it.
Collector tier: rare, where the trade ranks it from common through grail. In stock at 1 surveyed shop on 2026-10-19.
Reclassified out of Acanthastrea into Micromussa in 2016 on DNA and skeletal microstructure, but the trade still says acan. Corallites up to about 15mm across, carrying fleshy polyps that expand considerably wider than that, each banded concentrically, usually two contrasting shades drawn from red, orange, purple, blue and green.
Before you buy one
Price is per head and heads vary enormously in size. A four-head frag of small heads can be less coral than a two-head frag. 'Rainbow' is one named morph of this species among many others sold under their own names, so it describes a colourway rather than a lineage.
Keeping acans
Low rock, gentle flow, and it feeds heavily. Rainbow Acan is beginner to keep at a typical PAR of 50–120 in low to moderate flow. A typical starting range for this type of coral, not measured on this one.
What Rainbow Acan goes for
No verified sales yet. A range publishes once 3 dated, checkable records from 3 different sources exist, priced per head and reported as a median, with what shops ask kept separate from what buyers paid. One head is one polyp of a branching LPS. A five-head piece is divided by five before it is compared to anything. Nothing on this page is for sale. The survey found it at 1 of the 106 shops read on 2026-10-19. A range publishes from 3 shops up, so 2 more would have to list it before a figure appears here. One shop's asking price is that shop's opinion rather than a market.