Can Featherfin Cichlid and Freshwater Sole Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 6, 2026
Not Recommended

Featherfin Cichlid and Freshwater Sole 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

Featherfin Cichlid

Cyathopharynx furcifer

Freshwater Sole

Brachirus selheimi

🐠Family Group
Featherfin Cichlid
Cichlids - African
Freshwater Sole
Oddballs
Temperament
Featherfin Cichlid
Semi-Aggressive (6/10)
Freshwater Sole
Mostly Peaceful (4/10)
Temperature
✓ Compatible
Featherfin Cichlid
24–27°C
Freshwater Sole
22–28°C
pH Range
✗ No overlap
Featherfin Cichlid
8–9.2
Freshwater Sole
6.5–7.8
Hardness (dGH)
✓ Compatible
Featherfin Cichlid
10–25
Freshwater Sole
5–15
Water Type
✓ Compatible
Featherfin Cichlid
Freshwater Only
Freshwater Sole
Brackish Tolerant
Flow Preference
✓ Compatible
Featherfin Cichlid
Moderate
Freshwater Sole
Low
Min Tank Volume
Combined: 680 L
Featherfin Cichlid
550 L
Freshwater Sole
110 L
Swimming Level
Shared: 1 zone
Featherfin Cichlid
MiddleBottom
Freshwater Sole
Bottom
🏷️Behavior Tags
Featherfin Cichlid
Digger (Disturbs Substrate)Territorial (Defends specific area)Aggressive to same species/look-alikesHyperactive / Fast Swimmer
Freshwater Sole
Piscivore (Eats small/nano fish)Shrimp EaterFry PredatorDigger (Disturbs Substrate)Shy / Slow Moving (Easily Stressed)Nocturnal
Stocking calculator

Can your tank handle Featherfin Cichlid and Freshwater Sole?

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.

Featherfin Cichlid
Freshwater Sole
Test both in my tank

Behaviour & Temperament

Featherfin Cichlid is a moderately assertive species (6/10), while Freshwater Sole is generally mild-mannered (4/10). This modest difference means Featherfin Cichlid may occasionally assert dominance over Freshwater Sole.

Featherfin Cichlid and Freshwater Sole 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.

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

Worth noting: Freshwater Sole is nocturnal and will be most active after lights-out, naturally reducing daytime encounters.

Water Parameters

The safe temperature window for both species falls between 24°C and 27°C. Aim for the midpoint of this range (around 25.5°C) for optimal comfort.

The pH requirements of Featherfin Cichlid (8–9.2) and Freshwater Sole (6.5–7.8) do not overlap, making it impossible to satisfy both species simultaneously.

For general hardness, the shared comfort zone is 10–15 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Featherfin Cichlid and Freshwater Sole together, plan for an aquarium of at least 680 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). 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 Usually Fails in Practice

Featherfin Cichlid and Freshwater Sole 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 Featherfin Cichlid and Freshwater Sole.

Frequently Asked Questions

Can Featherfin Cichlid and Freshwater Sole live together?

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

What size tank do Featherfin Cichlid and Freshwater Sole need?

A minimum of 680 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 Featherfin Cichlid and Freshwater Sole together?

Keep the aquarium between 24°C and 27°C. A target of around 25.5°C sits comfortably within both species' preferred ranges.

Are Featherfin Cichlid or Freshwater Sole aggressive?

Featherfin Cichlid is moderately assertive (6/10) and Freshwater Sole is generally mild-mannered (4/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Featherfin Cichlid and Freshwater Sole need?

Their pH requirements do not overlap. Featherfin Cichlid prefers 8–9.2, while Freshwater Sole needs 6.5–7.8. This makes them incompatible in the same water chemistry.

How do I manage Featherfin Cichlid's territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Featherfin Cichlid 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 Freshwater Sole being nocturnal affect compatibility?

Freshwater Sole 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 Freshwater Sole during evening hours.

Editorial Review

Guidarium Editorial Desk

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

Last reviewed
May 6, 2026
Last updated
May 6, 2026
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