Ancula fuegiensis is a species of sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Goniodorididae.
Distribution This species was first described from Ushuaia, Argentina. It has also been reported from central Chile.Schrödl, Michael, 2003. Sea Slugs of southern South America. ConchBooks, Mainzer Str.25, D-55546 Hackenheim, Germany. 24 x 17 cm, 165pp., 14 col plates.
Description This goniodorid nudibranch is translucent white in colour with black spots. It has only two extra-branchial processes.
Ecology Ancula fuegiensis probably feeds on Entoprocta which often grow on hydroids, bryozoa and other living substrata.
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