Can Buettikoferi Bichir and Goldfish (Comet / Common) Live Together?
Keeping Buettikoferi Bichir and Goldfish (Comet / Common) together is possible but requires caution due to differing aggression levels. Provide a spacious tank of at least 257 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.
At a Glance
Can your tank handle Buettikoferi Bichir and Goldfish (Comet / Common)?
Compatibility is only part of the answer. Test both fish with your real tank size, current stock, and maintenance needs to see if you have enough space and a safe stocking level before you add them.
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Behaviour & Temperament
Buettikoferi Bichir is a moderately assertive species (6/10), while Goldfish (Comet / Common) is peaceful (1/10). This notable difference means Buettikoferi Bichir may occasionally assert dominance over Goldfish (Comet / Common).
Buettikoferi Bichir and Goldfish (Comet / Common) both frequent the Bottom (Substrate) 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: Buettikoferi Bichir is nocturnal and will be most active after lights-out, naturally reducing daytime encounters. Also, Buettikoferi Bichir is a known jumper, so a tight-fitting lid is essential.
To improve the chances of a peaceful coexistence in this community tank: A larger aquarium with ample hiding spots can help diffuse aggression and give the less dominant fish space to retreat.
Water Parameters
The safe temperature window for both species falls between 24°C and 24°C. Aim for the midpoint of this range (around 24.0°C) for optimal comfort.
Both fish can tolerate a pH between 6.5 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 5–15 dGH. Regular testing will ensure conditions stay within this range.
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Tank Setup
To house Buettikoferi Bichir and Goldfish (Comet / Common) together, plan for an aquarium of at least 257 litres with a minimum length of 120 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.
Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.
Specific environmental needs for this combination include: Sand (Sifters), Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding). 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.
Suitable Tank Sizes
Standard aquarium sizes large enough for both Buettikoferi Bichir and Goldfish (Comet / Common).
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
180 Gallon Standard
350 Liter (120cm Deep)
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Frequently Asked Questions
Can Buettikoferi Bichir and Goldfish (Comet / Common) live together?
They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 257 litres), plenty of hiding spots, and watch for signs of stress or aggression.
What size tank do Buettikoferi Bichir and Goldfish (Comet / Common) need?
A minimum of 257 litres (tank length at least 120 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 Buettikoferi Bichir and Goldfish (Comet / Common) together?
Keep the aquarium between 24°C and 24°C. A target of around 24.0°C sits comfortably within both species' preferred ranges.
Are Buettikoferi Bichir or Goldfish (Comet / Common) aggressive?
Buettikoferi Bichir is moderately assertive (6/10) and Goldfish (Comet / Common) is peaceful (1/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Buettikoferi Bichir and Goldfish (Comet / Common) need?
Both species overlap in the 6.5–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
Does Buettikoferi Bichir being nocturnal affect compatibility?
Buettikoferi Bichir 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 Buettikoferi Bichir during evening hours.
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