Can Buccochromis lepturus and Delicate Blue-Eye Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 4, 2026
Not Recommended

Buccochromis lepturus and Delicate 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

Buccochromis lepturus

Buccochromis lepturus

Delicate Blue-Eye

Pseudomugil tenellus

🐠Family Group
Buccochromis lepturus
Cichlids - African
Delicate Blue-Eye
Rainbowfish
Temperament
Buccochromis lepturus
Semi-Aggressive (6/10)
Delicate Blue-Eye
Peaceful (1/10)
Temperature
✓ Compatible
Buccochromis lepturus
24–28°C
Delicate Blue-Eye
25–32°C
pH Range
✓ Compatible
Buccochromis lepturus
7.5–8.8
Delicate Blue-Eye
5–7.5
Hardness (dGH)
✓ Compatible
Buccochromis lepturus
10–25
Delicate Blue-Eye
5–15
Water Type
✓ Compatible
Buccochromis lepturus
Freshwater Only
Delicate Blue-Eye
Brackish Tolerant
Flow Preference
✓ Compatible
Buccochromis lepturus
Moderate
Delicate Blue-Eye
Moderate
Min Tank Volume
Combined: 560 L
Buccochromis lepturus
560 L
Delicate Blue-Eye
60 L
Swimming Level
Shared: 1 zone
Buccochromis lepturus
MiddleBottom
Delicate Blue-Eye
TopMiddle
🏷️Behavior Tags
Buccochromis lepturus
Piscivore (Eats small/nano fish)Fry PredatorHyperactive / Fast Swimmer
Delicate Blue-Eye
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)Fry Predator
Stocking calculator

Can your tank handle Buccochromis lepturus and Delicate 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.

Buccochromis lepturus
Delicate Blue-Eye
Test both in my tank

Behaviour & Temperament

Buccochromis lepturus is a moderately assertive species (6/10), while Delicate Blue-Eye is peaceful (1/10). This notable difference means Buccochromis lepturus may occasionally assert dominance over Delicate Blue-Eye.

Buccochromis lepturus and Delicate 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 — piscivorous fish will prey on nano-sized tank mates..

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

Water Parameters

The safe temperature window for both species falls between 25°C and 28°C. Aim for the midpoint of this range (around 26.5°C) for optimal comfort.

Both fish can tolerate a pH between 7.5 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.

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

Tank Setup

To house Buccochromis lepturus and Delicate Blue-Eye together, plan for an aquarium of at least 560 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), Plants - Densely covered, Plants - Floating. Meeting these requirements will help both species thrive.

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

Why This Pairing Usually Fails in Practice

Buccochromis lepturus and Delicate Blue-Eye 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 Buccochromis lepturus and Delicate Blue-Eye.

Frequently Asked Questions

Can Buccochromis lepturus and Delicate Blue-Eye live together?

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

What size tank do Buccochromis lepturus and Delicate Blue-Eye need?

A minimum of 560 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 Buccochromis lepturus and Delicate Blue-Eye together?

Keep the aquarium between 25°C and 28°C. A target of around 26.5°C sits comfortably within both species' preferred ranges.

Are Buccochromis lepturus or Delicate Blue-Eye aggressive?

Buccochromis lepturus is moderately assertive (6/10) and Delicate Blue-Eye is peaceful (1/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Buccochromis lepturus and Delicate Blue-Eye need?

Both species overlap in the 7.5–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Editorial Review

Guidarium Editorial Desk

Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.

Last reviewed
May 4, 2026
Last updated
May 4, 2026
Issues or corrections?
Contact the editorial team

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