corallimorphs text index | photo index
Phylum Cnidaria > Class Anthozoa > Subclass Zoantharia/Hexacorallia > Order Corallimorpharia
Stubby corallimorph
Ricordea yuma
Family Ricordeidae
updated Jul 2024

Where seen? These little disk-shaped animal with stubby tentacles is sometimes encountered on our Southern shores, among coral rubble.

Features: Each polyp about 3-4cm in diameter, sometimes seen in groups of 5-10. Tentacles short and stubby, arranged in rows radiating from the centre. The edge of the oral disk is fringed with somewhat long stubby tipped tentacles. The mouth is usually held upturned and is then quite prominent. Colours seen include brown, green and blue.

A study found that Stubby corallimorphs can also look like Beaded corallimorphs (Discosoma nummiforme).


Status and threats: As at 2024, it is assessed not to be approaching the criteria for being listed among the threatened animals in Singapore.  

Kusu Island, Jun 05


Pulau Hantu, Aug 04

Sisters Island, Jul 04

St. John's Island, May 07

*Species are difficult to positively identify without close examination.
On this website, the animals are grouped by external features for convenience of display.


Stubby corallimorphs on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores


Cyrene Reef, May 13
Photo shared by Marcus Ng on flickr.

Terumbu Hantu, Jun 2016
Photo shared by Marcus Ng on facebook.
 

Links

  • Corallimorpharia on The Biodiversity of Singapore website, Lee Kong Chian Natural History Museum.

References

  • Checklist of Cnidaria (non-Sclerectinia) Species with their Category of Threat Status for Singapore by Yap Wei Liang Nicholas, Oh Ren Min, Iffah Iesa in G.W.H. Davidson, J.W.M. Gan, D. Huang, W.S. Hwang, S.K.Y. Lum, D.C.J. Yeo, 2024. The Singapore Red Data Book: Threatened plants and animals of Singapore. 3rd edition. National Parks Board. 258 pp.
  • Ren Min Oh, Mei Lin Neo, Nicholas Wei Liang Yap, Sudhanshi Sanjeev Jain, Ria Tan, Chaolun Allen Chen and Danwei Huang Citizen science meets integrated taxonomy to uncover the diversity and distribution of Corallimorpharia in Singapore, The Raffles Bulletin of Zoology Volume 67, Pp. 306-321.
 
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