Claire's mouse lemur has reddish-brown fur on its back and tail, with pale coloring on the muzzle and underside. Its current mapped range includes Nosy Be and adjacent mainland in northwestern Madagascar.
Its back is light reddish brown, brightening on the crown. A white stripe runs over the front of the muzzle, and the underside is white to cream; the tail is uniformly light reddish brown.
Species-specific feeding behavior is not detailed in the sources used here. Mouse lemurs are described as nocturnal and generally omnivorous, with foods varying by season.
An extinction-risk assessment has not been added yet.