Tenellia puellula is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Fionidae.

[2] This species was described from Japan.

It has been reported from the Japan Sea coast at Echizen Coast, Fukui Prefecture, north-west coast of Honshu and from the Pacific Ocean coast at Hachijo Island.

Similar looking animals have been found at Mooloolaba, Sunshine Coast, Queensland, Australia.

[3]