By Bob Goemans
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Family Ricordeidae

Ricordea yuma

(Carlgren, 1900)

Knobby False Coral

Likely Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Indo-West Pacific Ocean

Natural Environment: Usually found moderately high up on the reefs and on substrate high up in tide pools.

General Husbandry: A good identifying feature is its upraised mouth, which is surrounded by a ring of tentacles (Vincent Hargreaves, 2003).

Needs strong light and swift water movement, which are requirements opposite those of other members in this Order.

Can occasionally be fed small pieces of fresh fish flesh/clam/shrimp.

Somewhat aggressive, and may injure/sting corals, therefore give sufficient space around other animals.


    Kingdom: Animalia

    Phylum: Cnidaria

    Class: Anthozoa

    Subclass: Hexacorallia

    Order: Corallimorpharia

    Family: Ricordeidae

    Genus: Ricordea


    Experience Level: Beginner

    Diet: Photosynthetic/Absorption of nutrients/ Micro plankton/detritus feeder

    Temperament: Slightly aggressive

    Aquarium Environment: Reef or fish-only aquarium

    Coral Safe:With caution

    Fish Safe: Yes

    Invertebrate Safe: Yes

    Acclimation Time: 30 minutes+

    Aquarium Hardiness: Hardy

    Calcium (Ca): 380 - 430 mg/l

    Alkalinity: 2.5 - 3.0 meq/l

    Phosphate (PO4): <0.05 mg/l

    Magnesium (Mg): approx. 1350 mg/l (relate to specific gravity)

    Strontium (Sr) 8 - 10 mg/l

    Temperature Range: 72 - 83°F (22 - 28°C)

    Minimum Tank Size: 30 gallons

    Lighting: PAR 450+

    Water Movement: WM 3

    Specific Gravity: 1.023 - 1.025

    pH: 8.0 - 8.4

    Iodine/Trace Elements Monitor/as necessary to maintain quality seawater.

 Ricordea yuma (Knobby False Coral)
Photo © Bob Goemans
Ricordea florida Anthelia glauca
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