Ultra Zoanthid Combo

Ultra Zoanthid Combo, Zoanthus spp. and related species, is a mixed colony of brightly colored zoanthids featuring multiple contrasting color morphs growing together on the same frag. This specimen combines vivid red to crimson polyps with bright yellow-green centers alongside larger green-skirted polyps displaying warm bronze, gold, and yellow coloration across their oral discs.

Zoanthids grow as individual fleshy polyps connected by a shared mat of tissue that attaches to rock and other hard surfaces. Each polyp features a central mouth surrounded by a broad oral disc and a ring of short tentacles that form the characteristic outer skirt. As the colony becomes established, new polyps can develop from the connecting tissue and gradually expand across available substrate.

The Ultra Zoanthid Combo is especially striking because of the variety of colors and polyp patterns present within a single piece. The red morphs display rich scarlet to crimson coloration with contrasting fluorescent yellow-green central markings, while the larger companion polyps feature green outer skirts and multicolor bronze, gold, yellow, and darker central patterning. Together, these different morphs create a highly varied display under reef aquarium lighting.

Zoanthus species contain symbiotic photosynthetic dinoflagellates that provide much of their nutritional energy. They can also capture very small suspended particulate foods from the surrounding water. Stable water chemistry, moderate lighting, and gentle to moderate water movement generally support good polyp extension, coloration, and colony growth.

Because ornamental zoanthid names describe aquarium color morphs rather than scientifically distinct species, exact species identification cannot be determined reliably from coloration or external appearance alone. For this mixed colony, Zoanthus spp. and related species is the most appropriate scientific identification.

Care Guide

Scientific Identification: Zoanthus spp. and related species
Common Name: Zoanthids
Care Level: Easy to Moderate
Lighting: Low to Moderate
Water Flow: Low to Moderate, indirect and variable
Placement: Lower to middle areas of the aquarium depending on lighting intensity
Temperament: Semi-aggressive through growth and spreading; allow room from slower-growing neighboring corals
Reef Compatibility: Reef safe with appropriate placement
Feeding: Primarily photosynthetic; may also capture very small planktonic and particulate foods
Growth Form: Colonial fleshy polyps connected by a shared mat of tissue that spreads across hard substrate
Water Parameters: Maintain stable reef aquarium temperature and salinity with reasonably stable alkalinity and nutrient levels. Avoid rapid changes in water chemistry.
Special Considerations: Mixed zoanthid colonies may grow at different rates, so individual color morphs can gradually expand unevenly across the frag. Moderate water movement helps prevent debris from settling between densely packed polyps. Allow adequate space for expansion onto nearby rockwork.

Handling Precaution: Some zoanthids can contain palytoxin or related compounds. Avoid contact with eyes, mouth, and broken skin. Gloves and eye protection are recommended when handling, cutting, or fragging colonies, and zoanthids should never be boiled or exposed to very hot water.