Chromodoris preciosa from Indonesia

June 10, 2005
From: Carl Scott

Got one for you here that I can't quite pin down. It has the mantle edge characteristics that are described for Chromodoris rufomaculata, but it is solid white inside the edges. Please assist!

Locality: Tulamben, Bali, Indonesia, Bali Sea (Laut Bali). Depth: 10-15 meters. Length: 3 cm. 26 May 2005. sandy slope. Photographer: Carl Scott

Carl Scott

Scott, C., 2005 (Jun 10) Chromodoris preciosa from Indonesia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Carl,
When identifying species from descriptions it's important to go for the general pattern as well as special details. I'm afraid some individuals some individuals vary from the norm. I guess without such variation we would not have evolution. Life would be very boring if everything was the same shade of grey!

In this case the row of red dots around the edge is usually a solid red line. It is C. preciosa, which has white, red and yellow colour bands around the mantle edge. The manrle is white, sometimes with fine reddish spots, and the gills and rhinophores are translucent red with white edging.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Jun 10). Comment on Chromodoris preciosa from Indonesia by Carl Scott. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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