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Discovery stream
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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.
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Vermetid Snails
Vermetid snails are tube-dwelling pests that spread on rock and frag plugs and feed with sticky mucus webs. Their webs can irritate corals and...
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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...
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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...
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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...
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Myrionema Hydroids
Myrionema hydroids are stinging colonial polyps that often spread around zoa mats and frag plugs, causing localized zoanthid irritation and persistent closure. They thrive...
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Hydroids
Hydroids are stinging colonial polyps that hitchhike into reef tanks and can spread across plugs, racks, and rockwork. They often irritate corals and cause...
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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...
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Bearded Fireworm (Hermodice carunculata)
Bearded fireworms are not the same thing as ordinary bristleworms. They can sting, irritate coral, and sometimes eat weakened inverts, so the right move...
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Bobbit Worm (Eunice aphroditois)
Bobbit worms are hidden ambush predators that live deep in rock or sand and can cause strange fish, snail, or crab losses. They are...
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Coral-Boring Spionid Worms (Spionidae spp.)
Coral-boring spionid worms live in or around coral skeleton and feed with paired filaments that can irritate tissue and contribute to localized recession. They...