Phestilla sp. 1

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This species has been observed on Reunion Island

: Nudibranchia
Suborder : Dexiarchia
Superfamily : Fionoidea
Family : Fionidae
Distribution : Tropical Indo-West Pacific
Maximal size : 25 mm
Abundance : Seldom if ever...

Species characteristics :

The general body colouration is transparent with varying amounts of opaque
    The rhinophores (pale reddish brown or transparent ), which arise from a common base, are smooth and relatively short
    The cerata are arranged in transverse rows with each row being situated on top of a ridge
    The cerata are opaque white and uniformly pinkish brown or weakly banded with brown and cream.

Phestilla sp1
Showing species characteristics...
Photo Maurice Jay

See more about : Sightening and mating periods

Remarks :

Bibliographic data :

Phestilla sp. 1 could be confused with Phestilla lugubris but in Phestilla lugubris the ceratal surface bears numerous, low, irregular nodules and white patches.
    The cerata are long and cylindrical with a rounded tip. The ceratal surface is regularly pleated. Sometimes the tip is white and separated by a darker ring from the rest of the ceras.
    The oral tentacles are broad, relatively short, and their tips are pointed.
    Phestilla sp. 1 lives and feeds on species of the scleractinian coral genus Goniopora (family Poritidae).
    The spawn consists of numerous, creamish, cup-shaped spirals attached to the host coral by their narrow end.

References :

Bill Rudman Seaslug site : Sea Slug Forum : Phestilla sp1

Other photos of Phestilla sp1 :

Maurice Jay


Phestilla sp1 in a colonie of Goniopora sp.

The rhinophores (pale reddish brown ), which arise from a common base, are smooth and relatively short



phestilla in goniopora

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