Mushroom Coral
Discosoma nummiforme
A tough, flat mushroom coral that thrives where other corals struggle.
About
Found across a broad Indo-Pacific range from the waters off Djibouti to Japan and Cambodia, Discosoma nummiforme is a disc-shaped mushroom coral that earns its place in the hobby by being genuinely forgiving. The genus name gives the game away. These are flat, coin-like polyps that sit close to the substrate, expanding into smooth, disc-shaped forms when conditions suit them. Coloration varies across specimens, running from muted browns and grays to more interesting greens, and individual polyps can reach a few inches across when fully extended. In the wild this species tends to occupy lower-light reef zones, tucked under ledges or on shaded vertical faces, which translates well to aquarium life. It actually does better away from intense lighting than under it. Low to moderate flow suits it fine, and it has a reputation for tolerating the kinds of minor water quality fluctuations that would stress more demanding corals. It reproduces readily in captivity through fission, so a single polyp can eventually become a small colony without much effort from the keeper. For anyone setting up a first reef tank or filling in a dimly lit corner of an established system, this is a solid, low-maintenance choice.
Similar species
Other coral you might consider
Good tank mates
Species that tend to coexist peacefully with Mushroom Coral
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- What water parameters does the Mushroom Coral need?
- The Mushroom Coral does best with a temperature of 72–82°F, a pH of 8–8.4.
- Is the Mushroom Coral reef safe?
- The Mushroom Coral is generally considered reef safe.