Goniobranchus coi
Coi's goniobranchus
Philippines · Indo Pacific - South China Sea
- Size
- 20–30 mm · max 60 mm
- Native range
- Tropical western Pacific, from Vietnam and the Philippines to Japan, Australia, the Solomon Islands, Fiji and Micronesia.
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Description
A distinctive chromodorid with a frilly mantle edge that flaps rhythmically up and down as it crawls. Originally described from Vietnam as Glossodoris coi.
Share link: https://seaslugs.org.il/species/goniobranchus-coi-phillipines-indo-pacific-south-china-sea/
Identification
Yellowish-white mantle with a wavy dark purple to brown line enclosing a dull brown to greenish-brown central area around the rhinophores and gill, often mottled darker. A brown submarginal band and a thin purple line run around the frilly edge; some individuals have dark eye-like spots between the bands.
Similar species
Goniobranchus gleniei from the Indian Ocean is a close sibling species with an orange-brown centre and a different arrangement of purple lines.
Habitat & diet
Habitat
Tropical coral and rocky reefs; often seen around 10–20 m.
Food
Like other Goniobranchus, feeds on sponges.