Gem Sea Slug
Goniobranchus geminus
Max Size
See in AppMax Weight
—
Max Depth
m
Taxonomic history
Until 2012 this species was known as Chromodoris geminus but was moved to the genus Goniobranchus as a result of a molecular (DNA) study.
Description
It can reach a maximum size of 5 cm in length. It has four distinctive coloured lines around the mantle edge. Starting from a thin white outer line, then a light grayish line, followed by another white line and finally a bright golden yellow line. The background coloration from the back is light brown to yellowish speckled with mauve ocelli circled with a white margin. The foot, clearer and with a white margin, also has ocelli. The rhinophores are yellow or purple and laminated, gills are white outlined with beige.
Distribution & habitat
This sea slug lives in the Indian Ocean from Kenya to Sri Lanka and in the Red Sea and has a predilection for the external slopes of coral reefs.
Similar species
- Goniobranchus kuniei (Pruvot-Fol, 1930).
- Chromodoris leopardus (Rudman, 1987).
- Risbecia tryoni (Garrett, 1873).
- Chromodoris tritos (Yonow, 1994).
Colors
Habitat and Environment
Benthic
Coral reef
Similar Species
Frequently Asked Questions
Is Gem Sea Slug dangerous?
Gem Sea Slug has no known danger to humans. However, always observe marine life responsibly.