Giant Cup Mushroom (Amplexidiscus fenestrafer)
Family: Discosomatidae (Mushroom Corals)
Habitat: Shallow water, subtidal, often in lagoons. Water is generally turbid and flow is gentle.
Light: Medium Water Flow: Medium Space: 50+ gal.
Reef Safe: Yes Care Level: Easy Temperament: Aggressive
Diet: Small fish, photosynthetic , particulates, flocculents, possibly detritus
Natural History: Amplexidiscus is a corallimorph that can eat fish. They mimic anemones and can lure clownfish and other species to their deaths. They are capable of enclosing a trapped fish or crustacean and digesting it in the cup they form. They prefer low to moderate water flow and low to moderate light levels. Specimens can reach 18 inches in diameter.
Husbandry: The Giant Cup Mushroom can close within 3 seconds time to trap fish in an aquarium. They are generally nocturnal and will capture fish at night. This genus can also form mucus nets that may adversely affect other corals downstream in an aquarium. There are reports that this coral genus lures anemonefishes to their deaths. This coral is photosynthetic and benefits from moderate light.
AKA: Giant Cup Mushroom, Giant Elephant Ear Mushroom
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