Can Rosy Barb and Zebra Danio Live Together?
Yes, Rosy Barb and Zebra Danio 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 132 litres is recommended.
At a Glance
Behaviour & Temperament
Both Rosy Barb and Zebra Danio are generally mild-mannered species with an aggression score of 3/10. Their matching temperaments mean neither fish is likely to dominate the other in a shared aquarium.
Rosy Barb and Zebra Danio 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: Zebra Danio is a known jumper, so a tight-fitting lid is essential.
Water Parameters
The safe temperature window for both species falls between 18°C and 25°C. Aim for the midpoint of this range (around 21.5°C) for optimal comfort.
Both fish can tolerate a pH between 6.5 and 8. 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.
Tank Setup
To house Rosy Barb and Zebra Danio together, plan for an aquarium of at least 132 litres with a minimum length of 80 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: Smooth Gravel (Sensitive Barbels). 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.
Frequently Asked Questions
Can Rosy Barb and Zebra Danio live together?▾
Yes. Rosy Barb and Zebra Danio are considered ideal tank mates. Their water parameters, temperaments, and behaviour profiles are well matched for a community aquarium.
What size tank do Rosy Barb and Zebra Danio need?▾
A minimum of 132 litres (tank length at least 80 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 Rosy Barb and Zebra Danio together?▾
Keep the aquarium between 18°C and 25°C. A target of around 21.5°C sits comfortably within both species' preferred ranges.
Are Rosy Barb or Zebra Danio aggressive?▾
Rosy Barb is generally mild-mannered (3/10) and Zebra Danio is generally mild-mannered (3/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Rosy Barb and Zebra Danio need?▾
Both species overlap in the 6.5–8 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
Will Rosy Barb nip Zebra Danio's fins?▾
Rosy Barb is a known fin nipper. If Zebra Danio has long or flowing fins, there is a real risk of fin damage. Keeping Rosy Barb in a larger group can help redirect nipping behaviour toward conspecifics.
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