Can African Butterfly Fish and Gardner's Killifish Live Together?
Yes, African Butterfly Fish and Gardner's Killifish are ideal tank mates. Both species share compatible water parameters and peaceful temperaments, making them well-suited for a community aquarium. A minimum tank size of 96 litres is recommended.
At a Glance
Behaviour & Temperament
African Butterfly Fish is a moderately assertive species (5/10), while Gardner's Killifish is generally mild-mannered (4/10). This modest difference means African Butterfly Fish may occasionally assert dominance over Gardner's Killifish.
African Butterfly Fish and Gardner's Killifish both frequent the Top (Surface) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.
Worth noting: African Butterfly Fish is nocturnal and will be most active after lights-out, naturally reducing daytime encounters. Also, African Butterfly Fish is a known jumper, so a tight-fitting lid is essential.
Water Parameters
The safe temperature window for both species falls between 24°C and 26°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.
Both fish can tolerate a pH between 6 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.
For general hardness, the shared comfort zone is 4–10 dGH. Regular testing will ensure conditions stay within this range.
Tank Setup
To house African Butterfly Fish and Gardner's Killifish together, plan for an aquarium of at least 96 litres with a minimum length of 80 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.
Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.
Specific environmental needs for this combination include: Plants - Floating, Plants - Densely covered, Plants - lighly covered. Meeting these requirements will help both species thrive.
Both species do well with low (still water) water movement, so a standard filtration setup rated for the tank volume should suffice.
Frequently Asked Questions
Can African Butterfly Fish and Gardner's Killifish live together?▾
Yes. African Butterfly Fish and Gardner's Killifish are considered ideal tank mates. Their water parameters, temperaments, and behaviour profiles are well matched for a community aquarium.
What size tank do African Butterfly Fish and Gardner's Killifish need?▾
A minimum of 96 litres (tank length at least 80 cm) is recommended. This provides enough space for both species to establish their own areas and reduces the likelihood of territorial disputes.
What water temperature is best for African Butterfly Fish and Gardner's Killifish together?▾
Keep the aquarium between 24°C and 26°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.
Are African Butterfly Fish or Gardner's Killifish aggressive?▾
African Butterfly Fish is moderately assertive (5/10) and Gardner's Killifish is generally mild-mannered (4/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do African Butterfly Fish and Gardner's Killifish need?▾
Both species overlap in the 6–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
How do I manage African Butterfly Fish's territorial behaviour?▾
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives African Butterfly Fish space to claim a territory without encroaching on the other fish's area. Adding décor that divides the tank into distinct zones works especially well.
Does African Butterfly Fish being nocturnal affect compatibility?▾
African Butterfly Fish is most active after lights-out, which naturally reduces daytime encounters with its tank mate. This can actually be beneficial, as both fish get undisturbed time to feed and explore. Just ensure food reaches African Butterfly Fish during evening hours.
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