Goniobranchus pseudodecorus is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.MolluscaBase (2018). Goniobranchus pseudodecorus Yonow, 2018. Accessed on 2019-01-08.
Distribution This species was described from Hotel Zabargad, 120 km south of Marsa Alam, Egypt with additional material from Hurghada, Eilat and Quseir, Egypt and Jeddah, Saudi Arabia. It was reported by Eliot (1908)Eliot CNE (1908) Reports on the marine biology of the Sudanese Red Sea XI. Notes on a collection of nudibranchs from the Red Sea. Journal of the Linnean Society (Zoology) 31: 86–122. from Khor Dongola in the Sudanese Red Sea as a pale variety of Chromodoris maculosa.
Description Goniobranchus pseudodecorus has a translucent white or pale orange mantle with longitudinal, irregular opaque white lines and striations. Between these lines are small round magenta spots. There is an opaque white area towards the edge of the mantle which is more extensive at the head and behind the gill. At the edge of the mantle there is an orange band with regularly spaced white breaks or spots. The rhinophores and gill leaflets are translucent with some orange and some white markings.Yonow N., 2008. Red Sea Sea Slugs. Pensoft Publications, Sofia/Moscow, 304 pp., page 186, as Chromodoris sp.
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