What is "aplocheilidae"

Aplocheilidae is a family of bony fishes containing two, possibly three genera. Formerly, Aplocheilidae was synonymous with what is now recognized as the superfamily Aplocheiloidei as a whole, in that the Nothobranchiidae of Africa and the mainly South American Rivulidae grouped as subfamilies. This obsolete system is sometimes still seen, e.g. in ITIS.

Aplocheilids are small killifish, reaching in length. Species are found in southern Asia ( Aplocheilus) and Madagascar ( Pachypanchax). The West African genus Archiaphyosemion is often placed in the Nothobranchiidae instead of Aplocheilidae. All genera live in fresh water, but some species are somewhat salt-tolerant. As befitting euryhaline fish, some species are also found in muddy or brackish water. Some species are kept in aquariums.