Protopalythoa mutuki

(Haddon & Shackleton, 1891)

Green Button Coral

Range: Circumtropical distribution.

Natural Environment: Inhabits shallow, nutrient-rich rocky lagoons.

General Husbandry: Occasionally seen in the trade.

Polyps can be bright or dark green, and even though it contains zooxanthellae, supplemental feedings of baby brine shrimp will help the polyps multiply.

Cultured specimens readily available in the trade.

Aquarium Suitability: Best left in the wild

Taxonomy:

Kingdom: Animalia

Phylum: Cnidaria

Class: Anthozoa

Subclass: Hexacorallia

Order: Zoantharia

Suborder: Brachycnemina

Family: Zoanthidae

Genus: Protopalythoa

FYI: As with all Palythoa/Protopalythoa species, they produce a toxin called palytoxin (Mebs, 1989) that is found in its mucus coating. It is used to protect itself from predators and also clear the path of other corals so as to make space for expanding its colony. Keep in mind that if this toxic mucus enters your eye, mouth, or an open wound, it can cause various disorders including numbness, hallucinations, or even death. Therefore, always wash your hands after handling these creatures, and never handle them if you have open wounds on your hands! Wearing gloves is a good idea when handling these animals!

For far more general information about these corals, see my article titled 'Zoanthids - A Wide Range to Choose From' in the 'Article" section of this website.

Those in the trade mainly come from the Tropical Atlantic Ocean: Gulf of Mexico, and Caribbean.

Experience Level: Intermediate

Diet: Photosynthetic/Zooplankton feeder

Temperament: Semi-aggressive

Aquarium Environment: Reef or fish-only aquarium

Coral Safe:With caution

Fish Safe: Yes

Invertebrate Safe: Yes

Acclimation Time: 30 minutes+

Aquarium Hardiness: Moderate

Calcium (Ca): 380 - 430 mg/l

Alkalinity: 2.5 - 3.0 meq/l

Phosphate (PO4): <0.05 mg/l

Magnesium (Mg): approx. 1350 mg/l (relate to specific gravity)

Strontium (Sr) 8 - 10 mg/l

Temperature Range: 72 - 82°F (22 - 27°C)

Minimum Tank Size: 30 gallons

Lighting: PAR 350

Water Movement: WM 2

Specific Gravity: 1.023 - 1.025

pH: 8.0 - 8.4

Iodine/Trace Elements Monitor/as necessary to maintain quality seawater.