Chromodoris preciosa from Tonga

May 3, 2001
From: Don Barclay

Hi again, Bill,

Here's the other nudibranch from Tonga that I've had trouble identifying. It is so distinctive that I figured I would have no problem finding it, but perhaps I've simply overlooked it. The white, black, and orange marginal bands, along with the lavender markings on the rhinophores and gills should make it a cinch. Did I overlook it on the Forum?

This one was about 20mm long, and was collected on a cream-colored sponge under a slab in shallow water (~1m deep) in front of the Tongan Beach Resort, Utungake Island, Vava'u, Tonga. It was found on the afternoon of 15 February 2001.

Thanks for all the great work you do with the Sea Slug Forum.

Barclay, D., 2001 (May 3) Chromodoris preciosa from Tonga. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Don,
This is Chromodoris preciosa which in larger animals develops this uniform opaque creamy white background colour. Yes this species was on the Forum, but I am more than happy to see this photo as anything from Tonga will be a new distribution record.
Best wishes,
Bill Rudman

Rudman, W.B., 2001 (May 3). Comment on Chromodoris preciosa from Tonga by Don Barclay. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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