Can Severum and Zebra Danio Live Together?
Yes, Severum 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 336 litres is recommended.
At a Glance
Behaviour & Temperament
Severum is a moderately assertive species (5/10), while Zebra Danio is generally mild-mannered (3/10). This modest difference means Severum may occasionally assert dominance over Zebra Danio.
Severum 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 24°C and 26°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 7.5. 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 Severum and Zebra Danio together, plan for an aquarium of at least 336 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: Driftwood (Digestion/Hiding), 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.
Find the right tank equipment
Browse tanks, décor, and equipment suited for this setup.
Frequently Asked Questions
Can Severum and Zebra Danio live together?▾
Yes. Severum 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 Severum and Zebra Danio need?▾
A minimum of 336 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 Severum and Zebra Danio together?▾
Keep the aquarium between 24°C and 26°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.
Are Severum or Zebra Danio aggressive?▾
Severum is moderately assertive (5/10) and Zebra Danio is generally mild-mannered (3/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Severum and Zebra Danio need?▾
Both species overlap in the 6.5–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
Will Zebra Danio nip Severum's fins?▾
Zebra Danio is a known fin nipper. If Severum has long or flowing fins, there is a real risk of fin damage. Keeping Zebra Danio in a larger group can help redirect nipping behaviour toward conspecifics.
How do I manage Severum's territorial behaviour?▾
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Severum space to claim a territory without encroaching on the other fish's area. Adding décor that divides the tank into distinct zones works especially well.
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