Can Price's Rainbowfish and Reedfish (Ropefish) Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 3, 2026
Possible with Caution

Keeping Price's Rainbowfish and Reedfish (Ropefish) together is possible but requires caution due to mismatched flow preferences. Provide a spacious tank of at least 200 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Price's Rainbowfish

Chilatherina pricei

Reedfish (Ropefish)

Erpetoichthys calabaricus

🐠Family Group
Price's Rainbowfish
Rainbowfish
Reedfish (Ropefish)
Oddballs
Temperament
Price's Rainbowfish
Peaceful (2/10)
Reedfish (Ropefish)
Mostly Peaceful (3/10)
Temperature
✓ Compatible
Price's Rainbowfish
24–28°C
Reedfish (Ropefish)
22–28°C
pH Range
✓ Compatible
Price's Rainbowfish
7–8.5
Reedfish (Ropefish)
6–7.5
Hardness (dGH)
✓ Compatible
Price's Rainbowfish
8–20
Reedfish (Ropefish)
5–20
Water Type
✓ Compatible
Price's Rainbowfish
Freshwater Only
Reedfish (Ropefish)
Freshwater Only
Flow Preference
✗ No overlap
Price's Rainbowfish
High
Reedfish (Ropefish)
Low
Min Tank Volume
Combined: 200 L
Price's Rainbowfish
200 L
Reedfish (Ropefish)
180 L
Swimming Level
Shared: 1 zone
Price's Rainbowfish
TopMiddle
Reedfish (Ropefish)
BottomMiddle
🏷️Behavior Tags
Price's Rainbowfish
Hyperactive / Fast SwimmerJumper (Lid Required)Aggressive Eater (Starves shy fish)Fry Predator
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 Price's Rainbowfish 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.

Price's Rainbowfish
Reedfish (Ropefish)
Test both in my tank

Behaviour & Temperament

Price's Rainbowfish is a peaceful species (2/10), while Reedfish (Ropefish) is generally mild-mannered (3/10). This modest difference means Reedfish (Ropefish) may occasionally assert dominance over Price's Rainbowfish.

Price's Rainbowfish and Reedfish (Ropefish) 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, Price's Rainbowfish 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 7 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 8–20 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Price's Rainbowfish and Reedfish (Ropefish) together, plan for an aquarium of at least 200 litres with a minimum length of 120 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.

Specific environmental needs for this combination include: Smooth Gravel (Sensitive Barbels), Sand (Sifters), Driftwood (Digestion/Hiding), Plants - Densely covered. Meeting these requirements will help both species thrive.

Price's Rainbowfish prefers High (River/Stream) flow while Reedfish (Ropefish) needs Low (Still Water) flow. Consider positioning filter outlets and using baffles to create zones of different current intensity within the same tank.

Why This Pairing Needs Extra Planning in Practice

This pairing usually fails when the tank is treated like a standard mixed community and the caution flags are ignored. Price's Rainbowfish and Reedfish (Ropefish) need extra room, more cover, and closer observation during the first few weeks so small aggression, feeding, or territory issues do not snowball into a long-term problem.

Suitable Tank Sizes

Standard aquarium sizes large enough for both Price's Rainbowfish and Reedfish (Ropefish).

Show 5 more tank sizes

Frequently Asked Questions

Can Price's Rainbowfish and Reedfish (Ropefish) live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 200 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Price's Rainbowfish and Reedfish (Ropefish) need?

A minimum of 200 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 Price's Rainbowfish and Reedfish (Ropefish) 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 Price's Rainbowfish or Reedfish (Ropefish) aggressive?

Price's Rainbowfish is peaceful (2/10) and Reedfish (Ropefish) is generally mild-mannered (3/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Price's Rainbowfish and Reedfish (Ropefish) need?

Both species overlap in the 7–7.5 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.

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
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