Colorful zoanthid coral polyps in a row on a dark background
Sunny D Zoanthid (Zoanthus sp.) polyp on black, top-down view

Species profile

Sunny D

Zoanthus sp.

Also sold as: Sunny D zoas

Sunny D is a fast-growing classic with a metallic orange face, green mouth, and purple skirt.

Colors

Bright green to blue-green mouth, metallic orange face fading to gold, and a purple, often speckled, skirt

Care at a glance

Care level

Easy

Light

Medium

75-150 PAR

Flow

Moderate

Growth rate

Fast

Placement

Lower to middle rockwork on its own rock, away from slower corals it could overgrow

Temperature

75 to 80°F (24 to 27°C)

Salinity

1.024-1.026 specific gravity (about 32-35 ppt)

Feeding

Optional

Photosynthetic; optional fine particulate food once or twice a week

Care notes

Sunny D is a long-standing classic, and it has stayed popular because it is affordable, forgiving, and fast. That speed is the main thing to plan for. Given decent light and some nutrients in the water, a few polyps can turn into a patch the size of your palm, and it will creep onto neighboring rock. Under blue-heavy light the orange takes on a metallic sheen and the gold edge brightens. Under whiter light it looks warmer and more plainly orange. It is easy to confuse with Vivid Rainbow. Sunny D usually grows faster and often has a speckled skirt with a thin pinkish outer ring.

⚠ Palytoxin safety

Like any zoanthid, Sunny D may contain palytoxin, so treat it as toxic. Wear gloves and eye protection when handling or fragging, and wash up afterward.

Read the full Palytoxin Safety guide →