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Tiger Favorinus Nudibranch

Favorinus tsuruganus


Very small Nudibranch, less than 1 cm in length, feeding on the eggs (white ribbon stuff) of other Nudibranch. Favorinus tsuruganus is a species of aeolid nudibranch, a sea slug. It is a marine gastropod mollusk in the family Facelinidae. Favorinus tsuruganus grows to a maximum length of 25 mm. The back and oral tentacles are opaque white and there is a yellow patch on the front of the head. The rhinophores are black, and swell in a collar-like shape in three places. The cerata have black tips with the digestive gland duct being orange, a distinguishing feature of this species


This species occurs in Japan, more rarely in eastern Australia down to around Sydney, and has a wide western Pacific distribution. Favorinus tsuruganus feeds on the eggs of a wide range of other opisthobranchs, in particular, Hexabranchus (Spanish Dancer).

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Spotted by

Batangas, Philippines

Spotted on Jan 11, 2016
Submitted on Jan 20, 2016

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