Rhea and Enceladus: which is which?

Caption NASA originale:"Though much farther away from Cassini when the spacecraft acquired this image, Saturn's second-largest moon Rhea still dwarfs the brightest icy moon Enceladus in this scene. Rhea is 1.528 Km (approx. 949 miles) across. Enceladus is 505 Km (approx. 314 miles) across.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 21, 2005, at a distance of approx. 2 MKM (approx. 1,3 million miles) from Enceladus and 2,5 MKM (approx. 1,6 MMs) from Rhea. The image scale is 12 Km (approx. 7 miles) per pixel on Enceladus and 15 Km (approx. 9 miles) per pixel on Rhea".