Can Flyspeck Hardyhead and Reedfish (Ropefish) Live Together?

Ideal Tank Mates

Yes, Flyspeck Hardyhead and Reedfish (Ropefish) 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 180 litres is recommended.


At a Glance

Flyspeck Hardyhead

Craterocephalus stercusmuscarum

Reedfish (Ropefish)

Erpetoichthys calabaricus

🐠Family Group
Flyspeck Hardyhead
Other
Reedfish (Ropefish)
Oddballs
Temperament
Flyspeck Hardyhead
Peaceful (1/10)
Reedfish (Ropefish)
Mostly Peaceful (3/10)
Temperature
✓ Compatible
Flyspeck Hardyhead
22–28°C
Reedfish (Ropefish)
22–28°C
pH Range
✓ Compatible
Flyspeck Hardyhead
6–8
Reedfish (Ropefish)
6–7.5
Hardness (dGH)
✓ Compatible
Flyspeck Hardyhead
5–15
Reedfish (Ropefish)
5–20
Water Type
✓ Compatible
Flyspeck Hardyhead
Freshwater Only
Reedfish (Ropefish)
Freshwater Only
Flow Preference
✓ Compatible
Flyspeck Hardyhead
Moderate
Reedfish (Ropefish)
Low
Min Tank Volume
Combined: 180 L
Flyspeck Hardyhead
75 L
Reedfish (Ropefish)
180 L
Swimming Level
Shared: 1 zone
Flyspeck Hardyhead
TopMiddle
Reedfish (Ropefish)
BottomMiddle
🏷️Behavior Tags
Flyspeck Hardyhead
Hyperactive / Fast SwimmerJumper (Lid Required)
Reedfish (Ropefish)
Piscivore (Eats small/nano fish)Shrimp EaterJumper (Lid Required)NocturnalHyperactive / Fast SwimmerSlime Coat Eater (Attacks Flat Fish)
Stocking calculator

Can your tank handle Flyspeck Hardyhead and Reedfish (Ropefish)?

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
Reedfish (Ropefish)
Test both in my tank

Behaviour & Temperament

Flyspeck Hardyhead is a peaceful species (1/10), while Reedfish (Ropefish) is generally mild-mannered (3/10). This modest difference means Reedfish (Ropefish) may occasionally assert dominance over Flyspeck Hardyhead.

Flyspeck Hardyhead and Reedfish (Ropefish) both frequent the Middle (Open Water) 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: Reedfish (Ropefish) 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.

Water Parameters

The safe temperature window for both species falls between 22°C and 28°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 5–15 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Flyspeck Hardyhead and Reedfish (Ropefish) together, plan for an aquarium of at least 180 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.

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 - 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.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Flyspeck Hardyhead and Reedfish (Ropefish).

Show 5 more tank sizes

Frequently Asked Questions

Can Flyspeck Hardyhead and Reedfish (Ropefish) live together?

Yes. Flyspeck Hardyhead and Reedfish (Ropefish) are considered ideal tank mates. Their water parameters, temperaments, and behaviour profiles are well matched for a community aquarium.

What size tank do Flyspeck Hardyhead and Reedfish (Ropefish) need?

A minimum of 180 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 Reedfish (Ropefish) together?

Keep the aquarium between 22°C and 28°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.

Are Flyspeck Hardyhead or Reedfish (Ropefish) aggressive?

Flyspeck Hardyhead is peaceful (1/10) and Reedfish (Ropefish) is generally mild-mannered (3/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Flyspeck Hardyhead and Reedfish (Ropefish) 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.

Does Reedfish (Ropefish) being nocturnal affect compatibility?

Reedfish (Ropefish) 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 Reedfish (Ropefish) during evening hours.


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