Can False Glass Catfish and Freshwater Sole Live Together?

Ideal Tank Mates

Yes, False Glass Catfish and Freshwater Sole are ideal tank mates. Both species share compatible water parameters and peaceful temperaments, making them well-suited for a community aquarium. They occupy different areas of the water column, which reduces competition for space. A minimum tank size of 110 litres is recommended.


At a Glance

False Glass Catfish

Kryptopterus macrocephalus

Freshwater Sole

Brachirus selheimi

🐠Family Group
False Glass Catfish
Catfish
Freshwater Sole
Oddballs
Temperament
False Glass Catfish
Peaceful (2/10)
Freshwater Sole
Mostly Peaceful (4/10)
Temperature
✓ Compatible
False Glass Catfish
22–28°C
Freshwater Sole
22–28°C
pH Range
✓ Compatible
False Glass Catfish
5–7
Freshwater Sole
6.5–7.8
Hardness (dGH)
✓ Compatible
False Glass Catfish
1–8
Freshwater Sole
5–15
Water Type
✓ Compatible
False Glass Catfish
Freshwater Only
Freshwater Sole
Brackish Tolerant
Flow Preference
✓ Compatible
False Glass Catfish
Low
Freshwater Sole
Low
Min Tank Volume
Combined: 110 L
False Glass Catfish
110 L
Freshwater Sole
110 L
Swimming Level
✓ Different zones
False Glass Catfish
Middle
Freshwater Sole
Bottom
🏷️Behavior Tags
False Glass Catfish
Shy / Slow Moving (Easily Stressed)Fry PredatorShrimp Eater
Freshwater Sole
Piscivore (Eats small/nano fish)Shrimp EaterFry PredatorDigger (Disturbs Substrate)Shy / Slow Moving (Easily Stressed)Nocturnal
Stocking calculator

Can your tank handle False Glass Catfish 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.

False Glass Catfish
Freshwater Sole
Test both in my tank

Behaviour & Temperament

False Glass Catfish is a peaceful species (2/10), while Freshwater Sole is generally mild-mannered (4/10). This modest difference means Freshwater Sole may occasionally assert dominance over False Glass Catfish.

In terms of spatial distribution, False Glass Catfish prefers the Middle (Open Water) zone, whereas Freshwater Sole 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.

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 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 6.5 and 7. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 5–8 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house False Glass Catfish and Freshwater Sole together, plan for an aquarium of at least 110 litres with a minimum length of 90 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, Plants - Floating, Leaf Litter/Blackwater, Sand (Sifters). 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 False Glass Catfish and Freshwater Sole.

Show 10 more tank sizes

Frequently Asked Questions

Can False Glass Catfish and Freshwater Sole live together?

Yes. False Glass Catfish and Freshwater Sole are considered ideal tank mates. Their water parameters, temperaments, and behaviour profiles are well matched for a community aquarium.

What size tank do False Glass Catfish and Freshwater Sole need?

A minimum of 110 litres (tank length at least 90 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 False Glass Catfish and Freshwater Sole 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 False Glass Catfish or Freshwater Sole aggressive?

False Glass Catfish is peaceful (2/10) and Freshwater Sole is generally mild-mannered (4/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do False Glass Catfish and Freshwater Sole need?

Both species overlap in the 6.5–7 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

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.


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