Simpsonichthys perpendicularis
Simpsonichthys perpendicularis is a species of killifish from the family Rivulidae. It is found in the Jequitinhonha River basin in Brazil. This species reaches a length of . References

perpendicularis
Taxa named by Wilson José Eduardo Moreira da Costa
Taxa named by Dalton Tavares Bressane Nielsen
Taxa named by André Cordeiro de Luca
Fish described in 2001