Details of all species referred to in these Fish Care Sheets can be found in the FBAS Booklet No 6 - National Show Fish Sizes. Click HERE for information.
Genera: Aphyosemion, Aplocheilus, Cynolebias, Epiplatys, Nothobranchius.
Family: Aplocheilidae, Cyprinodontidae.
Geographic origin: North & South America, Africa, Asia and Southern Europe.
Common Names: Very few have common names. Aplocheilus lineatus (gold form)
is known as the 'Golden Wonder'.
Compatibility: Few killifish are kept in community tanks. Usually they are kept
as single species. This is often because the females of one
species are not readily distinguished from a close relative
species. Research prior to purchase is recommended.
Minimum Aquarium Size: Pairs of Killifish can be easily kept in small aquaria
e.g. 250mm x 200mm x 200mm (10” x 8” x 8”).
Only a very few large killifish require large tanks.
Temperature: Undemanding. Temperatures may range from 20o/30oC
68o/86oF, some have very specific requirements and more
research is necessary to establish what these requirements are.
Habitat: May be found in very small ponds (even puddles), rivers and lakes.
Community tank fish will benefit from a well planted aquarium.
Water Parameters : Most fish require soft acid water and do not easily accept
hard alkaline water conditions. Small water changes on a
weekly basis are beneficial.
Health: Several genera suffer from Oodinium – Velvet Disease which must be
treated promptly. Small fry seem to be particularly vulnerable.
Diet: Generally prefer live foods such as Daphnia, Mosquito larvae, Bloodworm
and Tubifex worms. Also accept frozen varieties of the live foods.
May, given time, accept dried foods.
Plants: Most killifish, are kept in unplanted tanks.
Breeding Notes : Fertilised eggs, laid in plants or in the substrate may,
depending on species, need a period of semi-dehydration
before hatching is triggered by re-immersion.
Availability: Only a very few species are stocked by fish shops.
Mainly available through a specialist organisation such as the
British Killifish Association.
Show Class: FBAS Show Class F
© FBAS 2000. PWC/RDE Fish Care Sheet 13 1/1