Aplocheiloidei is a suborder of the order Cyprinodontiformes consisting of three families which are commonly known as .
Families
The three families within the suborder Aplocheiloidei are:
The only known fossil member of the suborder is the
Late Miocene-aged
Kenyaichthys from the Lukeino Formation of Kenya, which is the only known member of the family
Kenyaichthyidae Altner & Reichenbacher, 2015.
Proposed taxonomy
Some authorities have lumped the three families into a single family, Aplocheilidae, a well-established name, chosen for its stability in usage over time, and to avoid the impact of a new name at the family rank for a popular
aquarium fish group.
[ Under this proposal, the Aplocheilidae includes three subfamilies: Aplocheilinae for the species from Asia, Madagascar and the Seychelles; Cynolebiidae (called Rivulidae above) for the species from the Americas; and Nothobranchiidae for the species from the African mainland.]