Can Odessa Barb and Silver Arowana Live Together?
Keeping Odessa Barb and Silver Arowana together is possible but requires caution, though some care is needed. Provide a spacious tank of at least 1200 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.
At a Glance
Behaviour & Temperament
Odessa Barb is a generally mild-mannered species (3/10), while Silver Arowana is moderately assertive (6/10). This modest difference means Silver Arowana may occasionally assert dominance over Odessa Barb.
In terms of spatial distribution, Odessa Barb prefers the Middle (Open Water) and Bottom (Substrate) zones, whereas Silver Arowana occupies the Top (Surface) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.
Worth noting: Silver Arowana is a known jumper, so a tight-fitting lid is essential.
To improve the chances of a peaceful coexistence in this community tank: Provide a significantly larger tank (at least 50% more volume than the minimum) to allow both Odessa Barb and Silver Arowana to establish separate territories. Add plenty of line-of-sight breaks using driftwood, rocks, and dense planting to reduce territorial confrontations. Keep fin nippers in larger groups to distribute nipping behaviour among conspecifics rather than tank mates.
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 5–12 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.
Tank Setup
To house Odessa Barb and Silver Arowana together, plan for an aquarium of at least 1200 litres with a minimum length of 240 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.
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: Plants - Densely covered, 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 Odessa Barb and Silver Arowana live together?▾
They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 1200 litres), plenty of hiding spots, and watch for signs of stress or aggression.
What size tank do Odessa Barb and Silver Arowana need?▾
A minimum of 1200 litres (tank length at least 240 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 Odessa Barb and Silver Arowana 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 Odessa Barb or Silver Arowana aggressive?▾
Odessa Barb is generally mild-mannered (3/10) and Silver Arowana is moderately assertive (6/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Odessa Barb and Silver Arowana 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 Odessa Barb nip Silver Arowana's fins?▾
Odessa Barb is a known fin nipper. If Silver Arowana has long or flowing fins, there is a real risk of fin damage. Keeping Odessa Barb in a larger group can help redirect nipping behaviour toward conspecifics.
How do I manage Silver Arowana's territorial behaviour?▾
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Silver Arowana 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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