Can Banded Cichlid and Forktail Blue-eye Live Together?

Not Recommended

Banded Cichlid and Forktail Blue-eye are not recommended as tank mates due to piscivorous fish will prey on nano-sized tank mates.. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Banded Cichlid

Heros notatus

Forktail Blue-eye

Pseudomugil furcatus

🐠Family Group
Banded Cichlid
Cichlids - South American
Forktail Blue-eye
Rainbowfish
Temperament
Banded Cichlid
Mostly Peaceful (4/10)
Forktail Blue-eye
Peaceful (2/10)
Temperature
βœ“ Compatible
Banded Cichlid
23–29Β°C
Forktail Blue-eye
24–28Β°C
pH Range
βœ“ Compatible
Banded Cichlid
6–7.2
Forktail Blue-eye
7–8
Hardness (dGH)
βœ“ Compatible
Banded Cichlid
1–10
Forktail Blue-eye
5–15
Water Type
βœ“ Compatible
Banded Cichlid
Freshwater Only
Forktail Blue-eye
Freshwater Only
Flow Preference
βœ“ Compatible
Banded Cichlid
Moderate
Forktail Blue-eye
Moderate
Min Tank Volume
Combined: 250 L
Banded Cichlid
250 L
Forktail Blue-eye
55 L
Swimming Level
Shared: 1 zone
Banded Cichlid
MiddleBottom
Forktail Blue-eye
TopMiddle
🏷️Behavior Tags
Banded Cichlid
Piscivore (Eats small/nano fish)Plant DestroyerTerritorial (Defends specific area)Digger (Disturbs Substrate)
Forktail Blue-eye
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)
Stocking calculator

Can your tank handle Banded Cichlid and Forktail Blue-eye?

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.

Banded Cichlid
Forktail Blue-eye
Test both in my tank

Behaviour & Temperament

Banded Cichlid is a generally mild-mannered species (4/10), while Forktail Blue-eye is peaceful (2/10). This modest difference means Banded Cichlid may occasionally assert dominance over Forktail Blue-eye.

Banded Cichlid and Forktail Blue-eye 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.

There is a critical concern: the Piscivore (Eats small/nano fish) behaviour of one fish directly conflicts with the Nano / Bite-sized (Predation Risk) trait of the other β€” piscivorous fish will prey on nano-sized tank mates..

Worth noting: Forktail Blue-eye is a known jumper, so a tight-fitting lid is essential.

Water Parameters

The safe temperature window for both species falls between 24Β°C and 28Β°C. Aim for the midpoint of this range (around 26.0Β°C) for optimal comfort.

Both fish can tolerate a pH between 7 and 7.2. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 5–10 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Banded Cichlid and Forktail Blue-eye 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.

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), Driftwood (Digestion/Hiding), Plants - Densely covered. Meeting these requirements will help both species thrive.

Note a potential conflict in setup requirements: Banded Cichlid is a plant destroyer, which conflicts with Forktail Blue-eye's requirement for live plants. Compromise where possible or prioritise the more critical need.

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

Suitable Tank Sizes

Standard aquarium sizes large enough for both Banded Cichlid and Forktail Blue-eye.

Show 1 more tank size

Frequently Asked Questions

Can Banded Cichlid and Forktail Blue-eye live together?

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

What size tank do Banded Cichlid and Forktail Blue-eye 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 Banded Cichlid and Forktail Blue-eye together?

Keep the aquarium between 24Β°C and 28Β°C. A target of around 26.0Β°C sits comfortably within both species' preferred ranges.

Are Banded Cichlid or Forktail Blue-eye aggressive?

Banded Cichlid is generally mild-mannered (4/10) and Forktail Blue-eye is peaceful (2/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Banded Cichlid and Forktail Blue-eye need?

Both species overlap in the 7–7.2 pH range. Consistency is key β€” avoid sudden swings, and test regularly to stay within this window.

How do I manage Banded Cichlid's territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Banded Cichlid space to claim a territory without encroaching on the other fish's area. Adding dΓ©cor that divides the tank into distinct zones works especially well.


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