
Clown killifish
Broad dark bars and a rocket-shaped tail on a small surface feeder.
Broad dark bars alternate with cream-yellow. The male has an extended orange-red tail centre with blue outer zones; females are shorter-finned and less colourful.
- Adult length
- Up to 3.5 cm (standard length, without the tail fin)
- Water temperature
- 20–26 °C
- pH
- 4–7
- Hardness
- 1–8 dGH
- Natural habitat
- Inhabits coastal swamps and other shallow coastal waters.
Use mature, stable water and tiny appropriate foods. Check surface feeding competition; not a fish to add casually to an immature aquarium.
Appearance and identification
Occasional mildly brackish records do not mean it needs salt in an aquarium.
Same-species behaviour
Keep 8–10 for social display.
Space requirements
Use a 45×30cm base with floating cover and surface access.
Diet and feeding
Offer tiny foods near the surface and watch that prepared food is accepted. Newly hatched fry need a separate, finer feeding plan.
Compatibility limits
Assess companion size and feeding pressure.
Aquarium environment
Floating cover suits surface use; keep feeding access.
Sources
killis.org.uk ↗ 2026-10-22
www.fishbase.se ↗ 2026-10-25
www.seriouslyfish.com ↗ 2026-10-22
api.gbif.org ↗ 2026-10-22
