Chromodoris roboi from Western Australia

April 19, 2003
From: Dan

Hi Bill
I was wondering if you could help me. I have taken this photo of a nudibranch on the wreck of HMAS Swan in Dunsborough, south west corner of Western Australia.

I have searched all over the internet to try and find out what it is called and haven’t been able to find it. I was wondering if you would know what it is or where else I might find the information. It would, of course, be fantastic to find a new nudibranch on our Wreck but I imagine this one has been found before. Any help you could give me would be much appreciated
Many Thanks
Dan <<...>>
Bay Dive & Adventures

Dan, 2003 (Apr 19) Chromodoris roboi from Western Australia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Dan,
This is what I think is a western Australian form of Chromodoris roboi. If you look at the other messages on this page you will see there is a bit of colour variation in the species, and in Western Australia all the photos I have seen are of this streaked, rather than spotted colour form. C. roboi has only recently been named so we still have a ot to learn about it. What it eats, what its eggs look like, its geographic range, it colour variability etc., etc., so any observations are very welcome.
Best wishes.
Bill Rudman

Rudman, W.B., 2003 (Apr 19). Comment on Chromodoris roboi from Western Australia by Dan. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Chromodoris roboi

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