Saltwater Aquarium Fish for Marine Aquariums: Button Polyp
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Button Polyp
Due to variations within species, your item may not look identical to the image provided.
Button Polyp (Protopalythoa sp.)
Additional locales and sizes may be available!

Quick Stats

Care Level Easy
Temperament Semi-aggressive
Lighting Moderate
Waterflow Medium
Placement Middle
Water Conditions 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.023-1.025
Color Form Green, Tan
Supplements Iodine, Trace Elements
Compatibility View Chart
Origin Aquacultured, Fiji, Indonesia
Family Zoanthidae
What do these Quick Stats mean? Click here for more information


The Protopalythoa Button Polyp Corals, also referred to as Moon Polyps, Encrusting Anemones, or Sea Mats, are generally brown or tan in color, but may also be green and fluoresce under actinic lighting. They are a colonial animal with multiple individual polyps attached to a piece of live rock or coral rubble.

They are very easy to maintain in the reef aquarium. Their polyps have the ability to sting other animals and are semi-aggressive, therefore, they need to have space between their colony and any neighbors. They also grow rapidly and will crowd out their neighbors including any sessile life. They require a medium light level combined with a medium to strong water movement within the aquarium. They will reproduce easily in the reef aquarium by budding (splitting off a portion of their base or mouth), which will increase the size of their colony. For continued good health, they will also require the addition of iodine and other trace elements to the water.

The symbiotic algae zooxanthellae hosted within their bodies provides the majority of their nutritional requirements through photosynthesis. They benefit from weekly feedings of micro-plankton or brine shrimp which should be fed to each individual of the colony.

Approximate Purchase Size: Small: 2" to 3"; Medium: 3" to 5"; Large: 5" to 7"

Customer Testimonials

Dean White Bradford , VT

A very attractive member of the Button Polyp genus, these polyps seem to grow larger than Moon or Colonial Polyps. They reproduce relatively quickly and spread to adjoining rocks to be moved about the aquarium. Because of the strong toxins in their slime coat, I recommend the aquarist avoid contact with them during tank maintenance. If contact is made, scrub your hands thoroughly.
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