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Spotted
foot nudibranch
Tayuva lilacina
Family Discodorididae
updated
May 2020
Where
seen? This large
nudibranch is well camouflaged and thus often overlooked. Even when
discovered, it's quite boring so most people don't get excited about
it. On coral rubble and encrusted rocks and under stones. Commonly
seen on our Northern shores. It appears to be seasonally common. It
was previously known as Discodoris lilacina.
Features: 8-10cm long. Broad,
somewhat stiff body that looks like coral rubble. Body pattern camouflages
it well against sand and rubble, usually grey or brown, sometimes
pinkish. Faint dark ovals about 3-4 in three rows along the body surface.
The pale underside has dark blotches and spots. Large rhinophores
and frilly gills.
There are several similar looking nudibranchs. One of them is Discodoris
fragilis which is said to easily break off (autotomise) its mantle
skirt when handled. The ones we have handled don't do this, but they
do produce a LOT of slime which is really hard to wipe off afterwards.
Dr Bill Rudman considers the older name Discodoris lilacina more suitable for all the animals that might be called Discodoris
fragilis. |
Chek Jawa, Jun 05 |
Feathery gills. |
Rhinophore. |
Tiny oral tentacles.
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Brown spots on the underside.
Pulau Sekudu, May 12
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Laying eggs.
Pulau Sekudu, Jul 05
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Eggs.
Pulau Sekudu, Jul 05
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Spotted
foot nudibranchs on Singapore shores |
Other sightings on Singapore shores |
Pulau Sekudu, Jul 20
Photo shared by Loh Kok Sheng on facebook. |
Beting Bronok, Jun 17
Photo shared by Toh Chay Hoon on facebook. |
East Coast (PCN), May 21
Photo shared by Vincent Choo on facebook. |
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Berlayar Creek, Jan 20
Photo shared by Jianlin Liu on facebook. |
St. John's
Island, Apr 12
Photo shared by Marcus Ng on facebook |
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Big Sisters Island, Jun 17
Photo shared by Tay Ywee Chieh on facebook. |
Big Sisters Island, Feb 24
Photo shared by Vincent Choo on facebook. |
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Kusu Island, Jul 20
Photo shared byJianlin Liu on facebook. |
Cyrene Reef, Jul 10
Photo shared by Loh Kok Sheng on his
blog. |
Cyrene Reef, Dec 15
Photo shared by Marcus Ng on facebook. |
Pulau Hantu, Oct 14
Photo shared by Toh Chay Hoon on facebook. |
Pulau Semakau (North), Apr 16
Photo shared by Loh Kok Sheng on facebook. |
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Cyrene Reef, Jun 10
Photo shared by Toh Chay Hoon on her
blog. |
Pulau Semakau, Oct 11
Photo shared by Jerome Pang on facebook. |
Pulau Semakau, May 11
Photo shared by Loh Kok Sheng on flickr. |
Links
References
- Tan Siong
Kiat and Henrietta P. M. Woo, 2010 Preliminary
Checklist of The Molluscs of Singapore (pdf), Raffles
Museum of Biodiversity Research, National University of Singapore.
- Coleman,
Neville. 2001. 1001
Nudibranchs: Catalogue of Indo-Pacific Sea Slugs. Neville
Coleman's Underwater Geographic Pty Ltd, Australia.144pp.
- Humann, Paul
and Ned Deloach. 2010. Reef
Creature Identification: Tropical Pacific New World Publications.
497pp.
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