Aplocheilus dayi Care Guide
Aplocheilus dayi, the Ceylon killifish, is an endangered Sri Lankan surface predator of shaded streams and brackish swamps.
Overview
Aplocheilus dayi, the Ceylon killifish, is a surface predator of the family Aplocheilidae. FishBase records it at up to 9.0 cm total length (commonly 7.0 cm) and notes it is easy to maintain in the aquarium.
Taxonomy
- Family: Aplocheilidae
- Genus: Aplocheilus
- Scientific name: Aplocheilus dayi
Habitat
FishBase and Wikipedia describe the species as endemic to Sri Lanka (with reports from India and the Malay Peninsula), inhabiting shallow shaded forest streams over silt substrate and brackish mangrove swamps.
Tank requirements
- Minimum tank volume: 80 L (about 21 gal)
- Temperature: 22-28 °C (72-82 °F)
- pH: 6.5-7.5
- GH: 5-15 °dGH
- Lifespan: 3-5 years
Diet
A carnivore. FishBase notes it feeds on small insects, insect larvae and fish fry, and is cultivated as a larvicidal fish for mosquito control.
Compatibility
A semi-aggressive top-water predator that should not be kept with tiny fish or fry. Larger barbs and other robust species make suitable companions. A secure cover is essential.
Conservation status
IUCN Red List: Endangered (assessed 2019), per FishBase.