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Aeolid Nudibranch

Tenellia sp


This Aeolid Nudibranch has been mis-identified many times as Cuthona yamasui, with the genus also wrongly placed, and now updated to the genus Tenellia. Tenellia was a small genus until a DNA phylogeny of the former family Tergipedidae resulted in most species of Cuthona being transferred to this genus. This picture is of a yet to be described Tenellia species. It has brown oral tentacles and rhinopores with white spot on the tip of its rhinopores. Its cerata are blue in colour with yellow/gold band and brown borders on the yellow band. This Aeolid Nudibranch feeds on Hydroids, which it is resting on, but covered with sands.

No species ID suggestions

28 Comments (1–25)

LisaPowers 7 months ago

Congrats Albert! This is a quite stunning photo!

AlbertKang 7 months ago

Thanks, @Sarah and @Felix :)

Felix Fleck
Felix Fleck 7 months ago

Congrats, Albert! Another fantastic find.

SarahWhitt 7 months ago

CONGRATS, Albert!!
WAY TO GO!!! :)

AlbertKang 7 months ago

Thanks, @Daniele and to PN for selecting this picture.

Thanks too, @Antonio and @Marek :)

Marek Koszorek
Marek Koszorek 7 months ago

Congratulation again Albert 😀

Congrats Albert

DanielePralong 7 months ago

Congratulations Albert, your Aeolid nudibranchis the undisputed winner of our 2017 Best Wildlife Photo competition, Others category:



AlbertKang 7 months ago

Thanks, @Leuba :)

Leuba Ridgway
Leuba Ridgway 7 months ago

Missed this one - just fantastic !

AlbertKang 10 months ago

Thanks, @Christine Y. :)

Christine Y.
Christine Y. 10 months ago

Congratulations Albert. This is so beautiful!

AlbertKang 11 months ago

Thanks, @remkinloch. This species has been known to scuba divers for many years, just that it was wrongly identified and now that it is known to be a different species, I am sure there are Scientists/Taxanomists working on the scientific description, but this process usually takes years to do.

remkinloch 11 months ago

Thoroughly deserving SOTD. Nature never ceases to amaze with the fantastical creatures that are out there, waiting to be discovered. Hard to believe that something so beautiful has escaped human attention!

AlbertKang 11 months ago

Thanks, @Daniele for this SOTD :)

Thanks too, @Mark Ridgway, @SarahWhitt, @SukanyaDatta, @LarryGraziano and @Vipul Ramanuj for your kind words :)

Vipul Ramanuj
Vipul Ramanuj 11 months ago

Congrats on the spotting of the day! This is brilliant.

LarryGraziano 11 months ago

Spectacular. Another amazing spotting Albert. Thank you!

SukanyaDatta 11 months ago

I have now TOTALLY run out of words!!!

SarahWhitt 11 months ago

OH MY!!! The colors are FANTASTIC!!

Mark Ridgway
Mark Ridgway 11 months ago

Incredible as usual Albert. Congrats.

DanielePralong 11 months ago

Nudibranchs never cease to amaze! Congratulations Albert Kang, this yet to be described aeolid species is our Spotting of the Day!



AlbertKang 11 months ago

Yes, and thanks for taking the time to further research about this Nudibranch.
Many websites/posts have made the error and sometimes, the reference of sp # is also wrong.

I got my confirmation from a friend who is also an expert in Nudibranch :D

DanielePralong 11 months ago

Thanks Albert. I started reading about the genus and stumbled across this species, which I thought looked similar in many points...

AlbertKang 11 months ago

Hi Daniele, Philippine-Sea-Slug forum is not the best/ultimate reference as most Nudibranch are not endemic to Philippines.

It is listed as Cuthona sp 13 in Nudibranch & Sea Slug Identification (NSSI), so here again you can see that NSSI has yet to update the genus change from Cuthona to Tenellia.

DanielePralong 11 months ago

Fantastic Albert! Is it the one referred to as Tenellia sp. 04 here?

Cebu City, Cebu, Philippines

Lat: 11.44, Long: 124.02

Spotted on Sep 18, 2017
Submitted on Sep 20, 2017

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