Can Cupid Cichlid and Green Neon Tetra Live Together?
Keeping Cupid Cichlid and Green Neon Tetra together is possible but requires caution, though some care is needed. Provide a spacious tank of at least 250 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.
At a Glance
Can your tank handle Cupid 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
Cupid Cichlid is a generally mild-mannered species (3/10), while Green Neon Tetra is peaceful (0/10). This modest difference means Cupid Cichlid may occasionally assert dominance over Green Neon Tetra.
Cupid 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.
Water Parameters
The safe temperature window for both species falls between 24°C and 29°C. Aim for the midpoint of this range (around 26.5°C) for optimal comfort.
Both fish can tolerate a pH between 5 and 6.5. Maintaining a stable value within this band is more important than hitting an exact number.
For general hardness, the shared comfort zone is 1–8 dGH. Regular testing will ensure conditions stay within this range.
Tank Setup
To house Cupid Cichlid and Green Neon Tetra together, plan for an aquarium of at least 250 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.
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: Sand (Sifters), Driftwood (Digestion/Hiding), Leaf Litter/Blackwater, Plants - Densely covered, Plants - Floating. Meeting these requirements will help both species thrive.
Both species do well with low (still water) water movement, so a standard filtration setup rated for the tank volume should suffice.
Why This Pairing Needs Extra Planning in Practice
This pairing usually fails when the tank is treated like a standard mixed community and the caution flags are ignored. Cupid Cichlid and Green Neon Tetra need extra room, more cover, and closer observation during the first few weeks so small aggression, feeding, or territory issues do not snowball into a long-term problem.
Suitable Tank Sizes
Standard aquarium sizes large enough for both Cupid Cichlid and Green Neon Tetra.
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
180 Gallon Standard
350 Liter (120cm Deep)
Show 1 more tank size
Frequently Asked Questions
Can Cupid Cichlid and Green Neon Tetra live together?
They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 250 litres), plenty of hiding spots, and watch for signs of stress or aggression.
What size tank do Cupid Cichlid and Green Neon Tetra need?
A minimum of 250 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 Cupid Cichlid and Green Neon Tetra together?
Keep the aquarium between 24°C and 29°C. A target of around 26.5°C sits comfortably within both species' preferred ranges.
Are Cupid Cichlid or Green Neon Tetra aggressive?
Cupid Cichlid is generally mild-mannered (3/10) and Green Neon Tetra is peaceful (0/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Cupid Cichlid and Green Neon Tetra need?
Both species overlap in the 5–6.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
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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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