Simpsonichthys delucai is a species of killifish in the family Rivulidae.Costa, W.J.E.M., 2003. The Simpsonichthys flavicaudatus species group (Cyprinodontiformes: Rivulidae: Cynolebiatinae): phylogenetic relationships, taxonomic revision and biogeography. Ichthyol. Explor. Freshwat. 14(1):31-60. It is found in Brazil.
Description Simpsonichthys delucai reaches a standard length of .
Etymology The fish is named in honor of Andre C. De Luca of the Federal University of Rio de Janeiro, who was the first collector of this species.
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