''Aplocheilus werneri'' (Werner's killifish) is a species of

killifish A killifish is any of various oviparous (egg-laying) cyprinodontiform fish (including families Aplocheilidae, Cyprinodontidae, Fundulidae, Profundulidae and Valenciidae). All together, there are 1,270 species of killifish, the biggest family ...

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

to Sri Lanka. This

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

grows to a length of . Its natural habitats are small, shallow, slow-flowing, heavily shaded streams and rivulets with a silt or clay substrate. They are largely use as an aquarium fish. The specific name honours the fish importer Andreas Werner who imported this species into Germany for the first time in 1964.

References

werneri Tropical fish Freshwater fish of Sri Lanka Taxa named by Herman Meinken Fish described in 1966 {{Cyprinodontiformes-stub