Can Sturgeon Catfish and Venustus Cichlid (Giraffe Hap) Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 11, 2026
Not Recommended

Sturgeon Catfish and Venustus Cichlid (Giraffe Hap) are not recommended as tank mates due to conflicting pH requirements. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Sturgeon Catfish

Platystomatichthys sturio

Venustus Cichlid (Giraffe Hap)

Nimbochromis venustus

🐠Family Group
Sturgeon Catfish
Catfish
Venustus Cichlid (Giraffe Hap)
Cichlids - African
Temperament
Sturgeon Catfish
Semi-Aggressive (6/10)
Venustus Cichlid (Giraffe Hap)
Aggressive (8/10)
Temperature
✓ Compatible
Sturgeon Catfish
22–26°C
Venustus Cichlid (Giraffe Hap)
24–28°C
pH Range
✗ No overlap
Sturgeon Catfish
6–7.5
Venustus Cichlid (Giraffe Hap)
7.8–8.6
Hardness (dGH)
✓ Compatible
Sturgeon Catfish
2–15
Venustus Cichlid (Giraffe Hap)
10–25
Water Type
✓ Compatible
Sturgeon Catfish
Freshwater Only
Venustus Cichlid (Giraffe Hap)
Freshwater Only
Flow Preference
✓ Compatible
Sturgeon Catfish
High
Venustus Cichlid (Giraffe Hap)
Moderate
Min Tank Volume
Combined: 800 L
Sturgeon Catfish
800 L
Venustus Cichlid (Giraffe Hap)
475 L
Swimming Level
Shared: 1 zone
Sturgeon Catfish
Bottom
Venustus Cichlid (Giraffe Hap)
MiddleBottom
🏷️Behavior Tags
Sturgeon Catfish
Piscivore (Eats small/nano fish)Hyperactive / Fast SwimmerNocturnalAggressive to same species/look-alikes
Venustus Cichlid (Giraffe Hap)
Piscivore (Eats small/nano fish)Generally AggressiveAggressive to same species/look-alikesTerritorial (Defends specific area)Hyperactive / Fast SwimmerDigger (Disturbs Substrate)
Stocking calculator

Can your tank handle Sturgeon Catfish and Venustus Cichlid (Giraffe Hap)?

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.

Sturgeon Catfish
Venustus Cichlid (Giraffe Hap)
Test both in my tank

Behaviour & Temperament

Sturgeon Catfish is a moderately assertive species (6/10), while Venustus Cichlid (Giraffe Hap) is semi-aggressive (8/10). This modest difference means Venustus Cichlid (Giraffe Hap) may occasionally assert dominance over Sturgeon Catfish.

Sturgeon Catfish and Venustus Cichlid (Giraffe Hap) 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: Sturgeon Catfish is nocturnal and will be most active after lights-out, naturally reducing daytime encounters.

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.

The pH requirements of Sturgeon Catfish (6–7.5) and Venustus Cichlid (Giraffe Hap) (7.8–8.6) do not overlap, making it impossible to satisfy both species simultaneously.

For general hardness, the shared comfort zone is 10–15 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Sturgeon Catfish and Venustus Cichlid (Giraffe Hap) together, plan for an aquarium of at least 800 litres with a minimum length of 180 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: Sand (Sifters), Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding). Meeting these requirements will help both species thrive.

Both species do well with high (river/stream) water movement, so a standard filtration setup rated for the tank volume should suffice.

Why This Pairing Usually Fails in Practice

Sturgeon Catfish and Venustus Cichlid (Giraffe Hap) 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 Sturgeon Catfish and Venustus Cichlid (Giraffe Hap) live together?

No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.

What size tank do Sturgeon Catfish and Venustus Cichlid (Giraffe Hap) need?

A minimum of 800 litres (tank length at least 180 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 Sturgeon Catfish and Venustus Cichlid (Giraffe Hap) 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 Sturgeon Catfish or Venustus Cichlid (Giraffe Hap) aggressive?

Sturgeon Catfish is moderately assertive (6/10) and Venustus Cichlid (Giraffe Hap) is semi-aggressive (8/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Sturgeon Catfish and Venustus Cichlid (Giraffe Hap) need?

Their pH requirements do not overlap. Sturgeon Catfish prefers 6–7.5, while Venustus Cichlid (Giraffe Hap) needs 7.8–8.6. This makes them incompatible in the same water chemistry.

How do I manage Venustus Cichlid (Giraffe Hap)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Venustus Cichlid (Giraffe Hap) 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.

Does Sturgeon Catfish being nocturnal affect compatibility?

Sturgeon Catfish 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 Sturgeon Catfish during evening hours.

Editorial Review

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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