Nannostomus limatus

Elegant pencilfish
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Characiformes
Family:	Lebiasinidae
Genus:	Nannostomus
Species:	N. limatus
Binomial name
Nannostomus limatus Weitzman, 1978

Nannostomus limatus, commonly known as the elegant pencilfish, is a freshwater species of fish belonging to the Lebiasinidae family of characins. They were first described in 1978 by Stanley H. Weitzman along with two other new species (Nannostomus britskii and Nannostomus nitidus), from a collection of specimens preserved in the São Paulo museum. They have been recorded from the Amazonian region of Brazil, specifically near Santarém.

...
Wikipedia