Can Reedfish (Ropefish) and Sterba's Corydoras Live Together?

🟢Ideal Tank Mates

Yes, Reedfish (Ropefish) and Sterba's Corydoras 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 216 litres is recommended.


At a Glance

Reedfish (Ropefish)

Erpetoichthys calabaricus

Sterba's Corydoras

Corydoras sterbai

🐠Family Group
Reedfish (Ropefish)
Oddballs
Sterba's Corydoras
Catfish
Temperament
Reedfish (Ropefish)
Mostly Peaceful (3/10)
Sterba's Corydoras
Peaceful (1/10)
Temperature
✓ Compatible
Reedfish (Ropefish)
22–28°C
Sterba's Corydoras
24–28°C
pH Range
✓ Compatible
Reedfish (Ropefish)
6–7.5
Sterba's Corydoras
6–7.6
Hardness (dGH)
✓ Compatible
Reedfish (Ropefish)
5–20
Sterba's Corydoras
2–15
Water Type
✓ Compatible
Reedfish (Ropefish)
Freshwater Only
Sterba's Corydoras
Freshwater Only
Flow Preference
✓ Compatible
Reedfish (Ropefish)
Low
Sterba's Corydoras
Moderate
Min Tank Volume
Combined: 216 L
Reedfish (Ropefish)
180 L
Sterba's Corydoras
75 L
Swimming Level
Shared: 1 zone
Reedfish (Ropefish)
BottomMiddle
Sterba's Corydoras
Bottom
🏷️Behavior Tags
Reedfish (Ropefish)
Piscivore (Eats small/nano fish)Shrimp EaterJumper (Lid Required)NocturnalHyperactive / Fast SwimmerSlime Coat Eater (Attacks Flat Fish)
Sterba's Corydoras
Hyperactive / Fast Swimmer

Behaviour & Temperament

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

Reedfish (Ropefish) and Sterba's Corydoras 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.

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.

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. An aquarium test kit is recommended for monitoring.

Tank Setup

To house Reedfish (Ropefish) and Sterba's Corydoras together, plan for an aquarium of at least 216 litres with a minimum length of 120 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

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.

Find the right tank equipment

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Frequently Asked Questions

Can Reedfish (Ropefish) and Sterba's Corydoras live together?

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

What size tank do Reedfish (Ropefish) and Sterba's Corydoras need?

A minimum of 216 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 Reedfish (Ropefish) and Sterba's Corydoras 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 Sterba's Corydoras aggressive?

Reedfish (Ropefish) is generally mild-mannered (3/10) and Sterba's Corydoras is peaceful (1/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Reedfish (Ropefish) and Sterba's Corydoras 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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