Nannostomus digrammus
 Nannostomus digrammus commonly known as the twostripe pencilfish is a freshwater species of fish belonging to the genus Nannostomus in the Lebiasinidae family of characins. They were first described in 1913 by Henry Weed Fowler and are fairly typical of members of this genus being small elongate fish with prominent horizontal stripes in this case limited to two dominant stripes usually maroon in color.