sea anemones text index | photo index
Phylum Cnidaria > Class Anthozoa > Subclass Zoantharia/Hexacorallia > Order Actiniaria
Posy anemone
Isactinia citrina
Family Actiniidae
updated Jul 2024
Where seen? This anemone is sometimes seen in small groups on coral rubble on our Northern and Southern shores. On Pulau Sekudu, they are sometimes seen in large numbers carpeting the ground. Elsewhere, they are seen alone or in smaller numbers.

Features: Diameter with tentacles extended 3-4cm. Many short tentacles reddish brown, paler at the base. Tentacle tips may be slightly bulbous. Oral disk large relative to the tentacles, same colour as tentacles. Body column smooth and pale.

Isactinia citrina can also look like Neon anemones.

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

Pulau Sekudu, Apr 06

Pulau Sekudu, Apr 06

Pulau Sekudu, Jul 04

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

Posy anemones on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores


Terumbu Buran, Nov 10
Photo shared by James Koh on flickr.

Lazarus Island, Feb 11
Photo shared by Russel Low on facebook.

Kusu Island, Jun 15
Photo shared by Loh Kok Sheng on his blog.


St John's Island, Jul 09
Photo shared by Loh Kok Sheng on flickr.

Cyrene, Apr 24
Photo shared by Kelvin Yong on facebook.


Terumbu Pempang Tengah, May 11
Photo shared by Loh Kok Sheng on his blog.

Terumbu Pempang Tengah, May 11
Photo shared by Toh Chay Hoon on her blog.

Terumbu Semakau, May 10
Photo shared by James Koh on his blog.


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.
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