Rostanga risbeci
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Rostanga risbeci

Rostanga risbeci, is a species of sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Discodorididae.

Appearance

Rostanga risbeci is a purple-black or black dorid nudibranch with the dorsum covered with caryophyllidia; in general it is very similar in shape, but not in colour, to other species of Rostanga.

Distribution

Geography

This species was described from Aitsu, Amakusa, Japan with additional specimens from Sagami Bay and the Echizen coast.

Habits and Lifestyle

This nudibranch is reported to feed on the black sponge Halichondria okadai - family Halichondriidae. Most species of Rostanga feed on sponges of the family Microcionidae.

References

1. Rostanga risbeci Wikipedia article - https://en.wikipedia.org/wiki/Rostanga_risbeci

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