Species of Gymnodoris are voracious predators of other opistobranches, G.ceylonica commonly feeds upon the sea hare Stylocheilus striatus.
Tonne de St Paul, 3 November 2009
Many specimens observed during this dive...
Some of them, eat Stylocheilus striatus
Yann Von Arnim
Ferme Marine de Mahebourg, Mauritius, 3 October 2008, 22m,
A large number of G. ceylonica was observed during one week ( 3 to 10 October). After this week the population decreased. During the last dive ( 17 October )we observed only a few specimens and some dead animals.