Goniobranchus annulatus
species of mollusc
Goniobranchus annulatus is a species of sea slug, a very colourful dorid nudibranch, a shell-less marine gastropod mollusc in the family Chromodorididae.
Description
Goniobranchus annulatus is a large smooth pale-bodied nudibranch with many vivid yellow spots, though these may be absent in some individuals. It has one purple ring around the gills and another ring around the rhinophores. The mantle usually has a purple border. It may grow to 100mm in total length. The gills are triangular in cross-section.
Distribution
This nudibranch was described from Zanzibar. It occurs in the Red Sea, the Indian Ocean, from the East Coast of South Africa to Thailand. It is a Lessepsian migrant and has recently invaded the Mediterranean Sea, presumably through the Suez Canal.
Watch
Goniobranchus annulatus in the Persian Gulf, Abu-Dhabi, 2008.
This brief starts where responsible research should: with the source description of “Goniobranchus annulatus” as species of mollusc. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the science & nature register because the source frames it as species of mollusc. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Aug 8, 2026. The linked authority identifier is Q3126952. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2008.
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This entry incorporates text from “Goniobranchus annulatus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.