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Red Planaria Flatworms ARTICLE

Red Planaria Flatworms

Red planaria are common nuisance flatworms that multiply quickly in low-flow, detritus-rich areas. Heavy infestations can shade and irritate corals, and large die-offs during...

Reefapedia 4 min read
Waminoa Coral Flatworms (Waminoa spp.) ARTICLE

Waminoa Coral Flatworms (Waminoa spp.)

Waminoa are small flatworms that sit on coral tissue and can create chronic irritation, shading, and reduced extension when populations build up. They are...

Reefapedia 4 min read
Aiptasia ARTICLE

Aiptasia

Aiptasia are fast-spreading pest anemones that hitchhike into reef tanks and sting corals. Catch and control them early—once established, they’re difficult to eradicate.

Reefapedia 4 min read
Zoanthid-Eating Nudibranch ARTICLE

Zoanthid-Eating Nudibranch

Zoanthid-eating nudibranchs are tiny, camouflaged predators that eat zoa polyps and can wipe colonies fast. They hide in mats and lay eggs, so outbreaks...

Reefapedia 4 min read
Christmas-Tree Hydroid ARTICLE

Christmas-Tree Hydroid

Fire/Christmas-tree hydroids are stinging Pennaria colonies that look like tiny feathery “mini trees” on plugs, racks, and sump/overflow surfaces. They can irritate corals—and sting...

Reefapedia 4 min read
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