Ricordea florida is a highly popular species of corallimorph (often called "false coral" or "mushroom coral") native to the shallow coastal waters of the Caribbean Sea, the Florida Keys, and the tropical Western Atlantic Ocean. Known for its brilliant, fluorescent color morphs and distinct bubble-like texture, it is a staple in the marine reef aquarium hobby.
Physical Appearance & Anatomy
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Skeletal Structure: Like all corallimorphs, Ricordea florida lacks a hard limestone skeleton. Its internal anatomy resembles a stony coral, but its body is entirely soft and fleshy.
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Body Form: The coral features a small, cylindrical body. The bottom functions as a flat, muscular disk (the foot) used to adhere to rocky surfaces and coral rubble. The top forms a round oral disk.
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Tentacles (Vesicles): The oral disk is densely covered in short, rounded, bead-like pseudotentacles that give the coral its signature "berry" or "bumpy" texture.
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Size: Individual polyps typically grow between (3.8 to 5 cm) in diameter, though fully expanded specimens can reach up to (7.5 cm).
Coloration
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Rainbow Palette: They are celebrated for their incredible diversity of colors, including vibrant shades of neon orange, emerald green, sky blue, purple, yellow, pink, and gold.
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Multi-Color Formats: Individual polyps are frequently multicolored. It is common for the rim tentacles, body tentacles, and central mouth to sport contrasting colors.
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Fluorescence: Under blue or actinic LED lighting, their pigments exhibit intense bioluminescent-like fluorescence.
Key Identification: R. florida vs. R. yuma
Reef keepers often confuse Ricordea florida (Atlantic) with its Pacific cousin, Ricordea yuma. They can be told apart by looking at the mouth area:
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The Mouth: Ricordea florida has a smooth central mouth that is isolated and free of tentacles. Conversely, R. yuma has tentacles crowding all the way up to and surrounding the rim of its mouth.
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Tentacle Pattern: R. florida has a more random, uniform distribution of bubble tentacles across its disk, whereas R. yuma tentacles radiate outward in distinct alternating large and small rows.
Diet and Behavior
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Dual Feeding: Ricordea florida is both autotrophic and heterotrophic. It hosts photosynthetic symbiotic algae (zooxanthellae) inside its tissues to convert light into energy. It also uses its short tentacles to capture organic debris, plankton, or liquid foods from the water column.
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Aggression: They possess a mild sting delivered via specialized stinging cells (cnidocytes). While generally peaceful and safe next to their own kind, they can harm or chemically agitate sensitive neighboring stony corals if they come into direct physical contact.
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Growth and Reproduction: They are relatively slow-growing. They reproduce naturally through a process called fission, where a single polyp develops a second mouth and gradually pinches itself into two separate organisms
