Can Chuco Cichlid and Green Neon Tetra Live Together?
Chuco Cichlid and Green Neon Tetra 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 Chuco Cichlid and Green Neon Tetra?
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
Chuco Cichlid is a semi-aggressive species (7/10), while Green Neon Tetra is peaceful (0/10). This notable difference means Chuco Cichlid may occasionally assert dominance over Green Neon Tetra.
Large aggression gap (7 points) between Chuco Cichlid and Green Neon Tetra increases stress risk for the more peaceful fish.
Chuco Cichlid and Green Neon Tetra 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.
Additional behavioural considerations to keep in mind: Aggressive fish may bully and stress shy, slow-moving species. Shrimp eaters may also prey on very small nano fish.
Water Parameters
The safe temperature window for both species falls between 24°C and 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.
The pH requirements of Chuco Cichlid (7–8) and Green Neon Tetra (4.5–6.5) do not overlap, making it impossible to satisfy both species simultaneously.
Hardness requirements are incompatible: Chuco Cichlid needs 10–20 dGH while Green Neon Tetra requires 1–8 dGH.
Tank Setup
To house Chuco Cichlid and Green Neon Tetra together, plan for an aquarium of at least 450 litres with a minimum length of 120 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), Leaf Litter/Blackwater, Plants - Densely covered, Plants - Floating. Meeting these requirements will help both species thrive.
Note a potential conflict in setup requirements: Chuco Cichlid is a plant destroyer, which conflicts with Green Neon Tetra's requirement for live plants. Compromise where possible or prioritise the more critical need.
Chuco Cichlid prefers High (River/Stream) flow while Green Neon Tetra needs Low (Still Water) 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
Chuco Cichlid and Green Neon Tetra 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.
Suitable Tank Sizes
Standard aquarium sizes large enough for both Chuco Cichlid and Green Neon Tetra.
Diet & Feeding
Feeding time deserves special attention with this pairing. Chuco Cichlid is a known shrimp eater and may prey on small invertebrates or nano fish like Green Neon Tetra.
Frequently Asked Questions
Can Chuco Cichlid and Green Neon Tetra live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Chuco Cichlid and Green Neon Tetra need?
A minimum of 450 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 Chuco Cichlid and Green Neon Tetra together?
Keep the aquarium between 24°C and 28°C. A target of around 26.0°C sits comfortably within both species' preferred ranges.
Are Chuco Cichlid or Green Neon Tetra aggressive?
Chuco Cichlid is semi-aggressive (7/10) and Green Neon Tetra is peaceful (0/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Chuco Cichlid and Green Neon Tetra need?
Their pH requirements do not overlap. Chuco Cichlid prefers 7–8, while Green Neon Tetra needs 4.5–6.5. This makes them incompatible in the same water chemistry.
How do I manage Chuco Cichlid's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Chuco 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 6, 2026
- Last updated
- May 6, 2026
- Issues or corrections?
- Contact the editorial team
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