Can Flyspeck Hardyhead and West African Bichir Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 11, 2026
Possible with Caution

Keeping Flyspeck Hardyhead and West African Bichir together is possible but requires caution due to differing aggression levels and potential behavioral clashes. Provide a spacious tank of at least 200 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Flyspeck Hardyhead

Craterocephalus stercusmuscarum

West African Bichir

Polypterus retropinnis

🐠Family Group
Flyspeck Hardyhead
Other
West African Bichir
Oddballs
Temperament
Flyspeck Hardyhead
Peaceful (1/10)
West African Bichir
Semi-Aggressive (5/10)
Temperature
✓ Compatible
Flyspeck Hardyhead
22–28°C
West African Bichir
24–28°C
pH Range
✓ Compatible
Flyspeck Hardyhead
6–8
West African Bichir
6–8
Hardness (dGH)
✓ Compatible
Flyspeck Hardyhead
5–15
West African Bichir
5–20
Water Type
✓ Compatible
Flyspeck Hardyhead
Freshwater Only
West African Bichir
Freshwater Only
Flow Preference
✓ Compatible
Flyspeck Hardyhead
Moderate
West African Bichir
Low
Min Tank Volume
Combined: 200 L
Flyspeck Hardyhead
75 L
West African Bichir
200 L
Swimming Level
✓ Different zones
Flyspeck Hardyhead
TopMiddle
West African Bichir
Bottom
🏷️Behavior Tags
Flyspeck Hardyhead
Hyperactive / Fast SwimmerJumper (Lid Required)
West African Bichir
Piscivore (Eats small/nano fish)NocturnalJumper (Lid Required)Shy / Slow Moving (Easily Stressed)
Stocking calculator

Can your tank handle Flyspeck Hardyhead and West African Bichir?

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.

Flyspeck Hardyhead
West African Bichir
Test both in my tank

Behaviour & Temperament

Flyspeck Hardyhead is a peaceful species (1/10), while West African Bichir is moderately assertive (5/10). This notable difference means West African Bichir may occasionally assert dominance over Flyspeck Hardyhead.

In terms of spatial distribution, Flyspeck Hardyhead prefers the Top (Surface) and Middle (Open Water) zones, whereas West African Bichir occupies the Bottom (Substrate) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion.

Worth noting: West African Bichir is nocturnal and will be most active after lights-out, naturally reducing daytime encounters. Also, Flyspeck Hardyhead 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 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

Both fish can tolerate a pH between 6 and 8. 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.

Tank Setup

To house Flyspeck Hardyhead and West African Bichir together, plan for an aquarium of at least 200 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: Plants - Densely covered, Established Algae (Otocinclus), Sand (Sifters), Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding). Meeting these requirements will help both species thrive.

Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.

Why This Pairing Needs Extra Planning in Practice

This pairing usually fails when the tank is treated like a standard mixed community and the caution flags are ignored. Flyspeck Hardyhead and West African Bichir need extra room, more cover, and closer observation during the first few weeks so small aggression, feeding, or territory issues do not snowball into a long-term problem.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Flyspeck Hardyhead and West African Bichir.

Show 5 more tank sizes

Frequently Asked Questions

Can Flyspeck Hardyhead and West African Bichir live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 200 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Flyspeck Hardyhead and West African Bichir need?

A minimum of 200 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 Flyspeck Hardyhead and West African Bichir together?

Keep the aquarium between 24°C and 28°C. A target of around 26.0°C sits comfortably within both species' preferred ranges.

Are Flyspeck Hardyhead or West African Bichir aggressive?

Flyspeck Hardyhead is peaceful (1/10) and West African Bichir is moderately assertive (5/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Flyspeck Hardyhead and West African Bichir need?

Both species overlap in the 6–8 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Does West African Bichir being nocturnal affect compatibility?

West African 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 West African Bichir during evening hours.

Editorial Review

Guidarium Editorial Desk

Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.

Last reviewed
May 11, 2026
Last updated
May 11, 2026
Issues or corrections?
Contact the editorial team

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