Tritoniella gnocchi is a species of the nudibranch genus Tritoniella.
It is a singleton species that was found at Burdwood Bank East south of the Falkland Islands at a depth of approximately 565 m (1,900 ft). It is the only Tritoniella species that was found north of the Polar front outside of the Southern Ocean.
Its diet consists of the gorgonian soft coral belonging to the family Primnoidae.
The species name was dedicated to the Italian dumpling gnocchi due to the similarity to its external body form.
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