Can Reedfish (Ropefish) and Trout Cichlid (Champsochromis) Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 3, 2026
Not Recommended

Reedfish (Ropefish) and Trout Cichlid (Champsochromis) are not recommended as tank mates due to conflicting pH requirements. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Reedfish (Ropefish)

Erpetoichthys calabaricus

Trout Cichlid (Champsochromis)

Champsochromis caeruleus

🐠Family Group
Reedfish (Ropefish)
Oddballs
Trout Cichlid (Champsochromis)
Cichlids - African
Temperament
Reedfish (Ropefish)
Mostly Peaceful (3/10)
Trout Cichlid (Champsochromis)
Aggressive (7/10)
Temperature
✓ Compatible
Reedfish (Ropefish)
22–28°C
Trout Cichlid (Champsochromis)
24–28°C
pH Range
✗ No overlap
Reedfish (Ropefish)
6–7.5
Trout Cichlid (Champsochromis)
7.8–8.6
Hardness (dGH)
✓ Compatible
Reedfish (Ropefish)
5–20
Trout Cichlid (Champsochromis)
10–25
Water Type
✓ Compatible
Reedfish (Ropefish)
Freshwater Only
Trout Cichlid (Champsochromis)
Freshwater Only
Flow Preference
✓ Compatible
Reedfish (Ropefish)
Low
Trout Cichlid (Champsochromis)
Moderate
Min Tank Volume
Combined: 500 L
Reedfish (Ropefish)
180 L
Trout Cichlid (Champsochromis)
500 L
Swimming Level
Shared: 1 zone
Reedfish (Ropefish)
BottomMiddle
Trout Cichlid (Champsochromis)
TopMiddle
🏷️Behavior Tags
Reedfish (Ropefish)
Piscivore (Eats small/nano fish)Shrimp EaterJumper (Lid Required)NocturnalHyperactive / Fast SwimmerSlime Coat Eater (Attacks Flat Fish)
Trout Cichlid (Champsochromis)
Piscivore (Eats small/nano fish)Hyperactive / Fast SwimmerJumper (Lid Required)Territorial (Defends specific area)Aggressive to same species/look-alikes
Stocking calculator

Can your tank handle Reedfish (Ropefish) and Trout Cichlid (Champsochromis)?

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.

Reedfish (Ropefish)
Trout Cichlid (Champsochromis)
Test both in my tank

Behaviour & Temperament

Reedfish (Ropefish) is a generally mild-mannered species (3/10), while Trout Cichlid (Champsochromis) is semi-aggressive (7/10). This notable difference means Trout Cichlid (Champsochromis) may occasionally assert dominance over Reedfish (Ropefish).

Reedfish (Ropefish) and Trout Cichlid (Champsochromis) 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, Reedfish (Ropefish) 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 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

The pH requirements of Reedfish (Ropefish) (6–7.5) and Trout Cichlid (Champsochromis) (7.8–8.6) do not overlap, making it impossible to satisfy both species simultaneously.

For general hardness, the shared comfort zone is 10–20 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Reedfish (Ropefish) and Trout Cichlid (Champsochromis) together, plan for an aquarium of at least 500 litres with a minimum length of 180 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: Sand (Sifters), Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding), Plants - Densely 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.

Why This Pairing Usually Fails in Practice

Reedfish (Ropefish) and Trout Cichlid (Champsochromis) are the kind of pair that can look acceptable in a shop but become a maintenance problem at home. The main risk is not a single number in the chart; it is the way incompatible behavior, water needs, or pressure on space compounds over time once both fish are established in the same tank.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Reedfish (Ropefish) and Trout Cichlid (Champsochromis).

Frequently Asked Questions

Can Reedfish (Ropefish) and Trout Cichlid (Champsochromis) live together?

No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.

What size tank do Reedfish (Ropefish) and Trout Cichlid (Champsochromis) need?

A minimum of 500 litres (tank length at least 180 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 Reedfish (Ropefish) and Trout Cichlid (Champsochromis) 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 Reedfish (Ropefish) or Trout Cichlid (Champsochromis) aggressive?

Reedfish (Ropefish) is generally mild-mannered (3/10) and Trout Cichlid (Champsochromis) is semi-aggressive (7/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Reedfish (Ropefish) and Trout Cichlid (Champsochromis) need?

Their pH requirements do not overlap. Reedfish (Ropefish) prefers 6–7.5, while Trout Cichlid (Champsochromis) needs 7.8–8.6. This makes them incompatible in the same water chemistry.

How do I manage Trout Cichlid (Champsochromis)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Trout Cichlid (Champsochromis) 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 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.

Editorial Review

Guidarium Editorial Desk

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

Last reviewed
May 3, 2026
Last updated
May 3, 2026
Issues or corrections?
Contact the editorial team

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