Simpsonichthys nielseni

Simpsonichthys nielseni is a species of killifish in the family Rivulidae.^[2] It is found in the São Francisco River basin, Brazil.^[3]

Simpsonichthys nielseni
Conservation status
Endangered  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Cyprinodontiformes
Family:	Rivulidae
Genus:	Simpsonichthys
Species:	S. nielseni
Binomial name
Simpsonichthys nielseni W. J. E. M. Costa, 2005
Synonyms
Hypsolebias nielseni (Costa, 2005)