Aneides hardii is a slim bodied salamander with a brownish dorsal and a ventral that ranges from gray to cream in color. Greenish gray to bronze mottling may also be observed from above, while the throat may be blotched with light patches of white. A yellow, broad dorsal stripe may also be present. 14 or 15 costal grooves are usually observed with an average of 2 to 4.5 grooves between adpressed limbs. This species may range in size from 1 3/4 inch to 2 1/2 inches in length.
 
This account was based on the description written in Stebbins (2003).