Description
Zoanthus sociatus, commonly known as Green Sea Mats or Button Polyps, are fast-growing, hardy soft corals from the Caribbean favored by aquarium enthusiasts for their vibrant, often fluorescent, green coloration. They form thick, encrusting colonies on rockwork, preferring strong lighting and moderate to high water flow. They are generally easy to maintain, feeding through photosynthesis and opportunistic consumption of detritus.
Key Aspects of Zoanthus sociatus in the Aquarium:
-
Care Difficulty: Easy.
-
Appearance: Small, colonial polyps, typically shades of green, with short tentacles that form mat-like structures.
-
Lighting: High intensity required to maintain coloration and prevent stretching, though they can adapt to moderate levels.
-
Water Flow: Moderate to high flow is beneficial to remove waste and provide food.
-
Feeding: Primarily photosynthetic (zooxanthellae), but benefit from direct feeding of small, planktonic foods.
-
Growth: Fast-spreading, often covering rock surfaces.
-
Placement: Generally placed in upper to mid-level areas to receive adequate light.
-
Toxicity: Like all zoanthids, Z. sociatus contains toxins (palitoxin) that are harmful to health. Use caution, such as wearing gloves, when handling.
Key Considerations for Hobbyists:
-
Pests: Sensitive to nudibranchs (e.g., Aeolidiopsis harrietae) and Sundial Snails (Heliacus sp.), which should be removed immediately.
-
Placement: They can grow over other corals, so provide space for them to spread without encroaching on neighbors.
-
Behavior: They are highly photosynthetic and will generally stay open during the day and close at night.
