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Nannostomus minimus, (from the Greek: nanos = small, and the Latin stoma = relating to the mouth; from the Latin: minimus = of the smallest size),[1][2] commonly known as the least pencilfish, is a freshwater species of fish belonging to the characin family Lebiasinidae.[3] It is restricted to Guyana, where it has been reported from the Potaro and Mazaruni Rivers.[4]

Least pencilfish
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Characiformes
Family:	Lebiasinidae
Genus:	Nannostomus
Species:	N. minimus
Binomial name
Nannostomus minimus C. H. Eigenmann, 1909

N. minimus reaches a length of 23 mm.[4] When described in 1909, it was the smallest of the known pencilfishes; that distinction has since passed to N. anduzei.

References

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