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

[2] The species was first described, then named as Amphorina pallida by Charles Eliot.

It was rediscovered and redescribed in 2002 and placed it in the genus Cuthona.

[3] Recently, a DNA phylogeny of the former family Tergipedidae resulted in most species of Cuthona being transferred to the genus Tenellia, including Cuthona pallida which became Tenellia pallida.

[4] This species was described from the Cape Verde Islands.