Aplocheilus werneri (Werner's killifish) is a species of killifish endemic to Sri Lanka.

This species grows to a length of 7 cm (2.8 in).

Its natural habitats are small, shallow, slow-flowing, heavily shaded streams and rivulets with a silt or clay substrate.

[1] The specific name honours the fish importer Andreas Werner who imported this species into Germany for the first time in 1964.

This Cyprinodontiformes article is a stub.