Can Bullseye Catfish and Reedfish (Ropefish) Live Together?

Not Recommended

Bullseye Catfish and Reedfish (Ropefish) are not recommended as tank mates due to slime coat eaters target slow-moving fish, causing severe stress and health issues.. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Bullseye Catfish

Horabagrus brachysoma

Reedfish (Ropefish)

Erpetoichthys calabaricus

🐠Family Group
Bullseye Catfish
Catfish
Reedfish (Ropefish)
Oddballs
Temperament
Bullseye Catfish
Semi-Aggressive (6/10)
Reedfish (Ropefish)
Mostly Peaceful (3/10)
Temperature
✓ Compatible
Bullseye Catfish
23–28°C
Reedfish (Ropefish)
22–28°C
pH Range
✓ Compatible
Bullseye Catfish
6–7.5
Reedfish (Ropefish)
6–7.5
Hardness (dGH)
✓ Compatible
Bullseye Catfish
5–20
Reedfish (Ropefish)
5–20
Water Type
✓ Compatible
Bullseye Catfish
Freshwater Only
Reedfish (Ropefish)
Freshwater Only
Flow Preference
✓ Compatible
Bullseye Catfish
Moderate
Reedfish (Ropefish)
Low
Min Tank Volume
Combined: 450 L
Bullseye Catfish
450 L
Reedfish (Ropefish)
180 L
Swimming Level
Shared: 2 zones
Bullseye Catfish
BottomMiddle
Reedfish (Ropefish)
BottomMiddle
🏷️Behavior Tags
Bullseye Catfish
Piscivore (Eats small/nano fish)NocturnalShrimp EaterShy / Slow Moving (Easily Stressed)
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 Bullseye Catfish 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.

Bullseye Catfish
Reedfish (Ropefish)
Test both in my tank

Behaviour & Temperament

Bullseye Catfish is a moderately assertive species (6/10), while Reedfish (Ropefish) is generally mild-mannered (3/10). This modest difference means Bullseye Catfish may occasionally assert dominance over Reedfish (Ropefish).

Bullseye Catfish and Reedfish (Ropefish) both frequent the Bottom (Substrate) and 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.

There is a critical concern: the Shy / Slow Moving (Easily Stressed) behaviour of one fish directly conflicts with the Slime Coat Eater (Attacks Flat Fish) trait of the other — slime coat eaters target slow-moving fish, causing severe stress and health issues..

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

Worth noting: Bullseye Catfish 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 23°C and 28°C. Aim for the midpoint of this range (around 25.5°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 5–20 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Bullseye Catfish and Reedfish (Ropefish) together, plan for an aquarium of at least 450 litres with a minimum length of 150 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: Driftwood (Digestion/Hiding), Smooth Gravel (Sensitive Barbels), Plants - Floating, Sand (Sifters), Plants - Densely covered. 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 Bullseye Catfish and Reedfish (Ropefish).

Frequently Asked Questions

Can Bullseye Catfish and Reedfish (Ropefish) live together?

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

What size tank do Bullseye Catfish and Reedfish (Ropefish) need?

A minimum of 450 litres (tank length at least 150 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 Bullseye Catfish and Reedfish (Ropefish) together?

Keep the aquarium between 23°C and 28°C. A target of around 25.5°C sits comfortably within both species' preferred ranges.

Are Bullseye Catfish or Reedfish (Ropefish) aggressive?

Bullseye Catfish is moderately assertive (6/10) and Reedfish (Ropefish) is generally mild-mannered (3/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Bullseye Catfish 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 Bullseye Catfish being nocturnal affect compatibility?

Bullseye Catfish 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 Bullseye Catfish during evening hours.


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