The Glossodoris rufomarginata is a species of colourful sea slug. They are dorid nudibranchs, marine gastropod mollusks. They were first described in 1890 by Bergh.
Glossodoris rufomarginata have an elongated shape. The centre of the mantle has a large number of orange brown spots which are surrounded by a white band. The edges of the mantle have a pronounced orange line. The rhinopores are a brown orange with white tips and the gills are white with brown orange dots. Both the rhinopores and gills are retractable . The foot is white with orange spots on the sides. This specimen was photographed on Cryptomania dive site in Mtwara in Tanzania at around 8 meters. This specimen was approximately 50 mm in length.
IN THE WILD
Glossodoris rufomarginata are not that common in Tanzania but are very occasionally seen. They have the ability to secrete toxic substances which provides protection against predators. Being fairly slow moving they are easy to observe while diving. They seem to sense a diver and usually head for cover, probably not appreciating having lights shone on them.
The Glossodoris rufomarginata is found across the Indo west Pacific area . They are found on rocky and coral reefs to a depth of 30 meters.
Glossodoris rufomarginata is thought to feed on some species of sponge.
They are simultaneous hermaphrodites and mating takes place by darting. The individual who darts the other first becomes the dominant male and the other the female. Eggs are laid on a solid substrate. When they hatch the larvae become planktonic before growing into adults.
GLOSSODORIS RUFOMARGINATA CLASSIFICATION
- The Reef Guide fishes, corals, nudibranchs & other invertebrates: East and South Coasts of Southern Africa by Dennis King & Valda Fraser