Smith, 1955 Nemanthias is a genus of marine ray-finned fish in the family Anthiadidae.

It is a monotypic genus containing the single species Nemanthias carberryi, the threadfin anthias, which is native to the western Indian Ocean.

[2] Nemanthias carberryi grows to a maximum total length of around 13 cm (5 in).

[3] Juvenile fish have an extra small dorsal spine at first.

[2] The cornea of the eye exhibits a marked iridescence which changes from greeish-blue to orange, depending on the angle of view; electron microscopy shows that this is due to the angled lamellae on the surface.