Can Rio Negro Dwarf Cichlid and Shovelnose Sturgeon Live Together?
Rio Negro Dwarf Cichlid and Shovelnose Sturgeon are not recommended as tank mates due to conflicting pH requirements and incompatible hardness ranges. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.
At a Glance
Can your tank handle Rio Negro Dwarf Cichlid and Shovelnose Sturgeon?
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.
Behaviour & Temperament
Rio Negro Dwarf Cichlid is a semi-aggressive species (7/10), while Shovelnose Sturgeon is generally mild-mannered (3/10). This notable difference means Rio Negro Dwarf Cichlid may occasionally assert dominance over Shovelnose Sturgeon.
Rio Negro Dwarf Cichlid and Shovelnose Sturgeon both frequent the Bottom (Substrate) 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: Shovelnose Sturgeon is a known jumper, so a tight-fitting lid is essential.
Water Parameters
The safe temperature window for both species falls between 22°C and 22°C. Aim for the midpoint of this range (around 22.0°C) for optimal comfort.
The pH requirements of Rio Negro Dwarf Cichlid (4–6.5) and Shovelnose Sturgeon (6.8–8) do not overlap, making it impossible to satisfy both species simultaneously.
Hardness requirements are incompatible: Rio Negro Dwarf Cichlid needs 0–5 dGH while Shovelnose Sturgeon requires 8–20 dGH.
Tank Setup
To house Rio Negro Dwarf Cichlid and Shovelnose Sturgeon together, plan for an aquarium of at least 3000 litres with a minimum length of 300 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: Leaf Litter/Blackwater, Driftwood (Digestion/Hiding), Sand (Sifters), Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.
Rio Negro Dwarf Cichlid prefers Low (Still Water) flow while Shovelnose Sturgeon needs High (River/Stream) flow. Consider positioning filter outlets and using baffles to create zones of different current intensity within the same tank.
Why This Pairing Usually Fails in Practice
Rio Negro Dwarf Cichlid and Shovelnose Sturgeon are the kind of pair that can look acceptable in a shop but become a maintenance problem at home. The main risk is not a single number in the chart; it is the way incompatible behavior, water needs, or pressure on space compounds over time once both fish are established in the same tank.
Frequently Asked Questions
Can Rio Negro Dwarf Cichlid and Shovelnose Sturgeon live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Rio Negro Dwarf Cichlid and Shovelnose Sturgeon need?
A minimum of 3000 litres (tank length at least 300 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 Rio Negro Dwarf Cichlid and Shovelnose Sturgeon together?
Keep the aquarium between 22°C and 22°C. A target of around 22.0°C sits comfortably within both species' preferred ranges.
Are Rio Negro Dwarf Cichlid or Shovelnose Sturgeon aggressive?
Rio Negro Dwarf Cichlid is semi-aggressive (7/10) and Shovelnose Sturgeon is generally mild-mannered (3/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Rio Negro Dwarf Cichlid and Shovelnose Sturgeon need?
Their pH requirements do not overlap. Rio Negro Dwarf Cichlid prefers 4–6.5, while Shovelnose Sturgeon needs 6.8–8. This makes them incompatible in the same water chemistry.
How do I manage Rio Negro Dwarf Cichlid's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Rio Negro Dwarf Cichlid 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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Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- May 11, 2026
- Last updated
- May 11, 2026
- Issues or corrections?
- Contact the editorial team
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