Can Livingston's Cichlid and Mono Sebae (Brackish) Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026
Not Recommended

Livingston's Cichlid and Mono Sebae (Brackish) are not recommended as tank mates due to incompatible water types. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Livingston's Cichlid

Nimbochromis livingstonii

Mono Sebae (Brackish)

Monodactylus sebae

🐠Family Group
Livingston's Cichlid
Cichlids - African
Mono Sebae (Brackish)
Oddballs
Temperament
Livingston's Cichlid
Aggressive (8/10)
Mono Sebae (Brackish)
Mostly Peaceful (4/10)
Temperature
✓ Compatible
Livingston's Cichlid
23–28°C
Mono Sebae (Brackish)
24–28°C
pH Range
✓ Compatible
Livingston's Cichlid
7.6–8.6
Mono Sebae (Brackish)
7.5–8.5
Hardness (dGH)
✓ Compatible
Livingston's Cichlid
10–25
Mono Sebae (Brackish)
12–30
Water Type
✗ No overlap
Livingston's Cichlid
Freshwater Only
Mono Sebae (Brackish)
Brackish Required
Flow Preference
✓ Compatible
Livingston's Cichlid
Moderate
Mono Sebae (Brackish)
Moderate
Min Tank Volume
Combined: 546 L
Livingston's Cichlid
470 L
Mono Sebae (Brackish)
400 L
Swimming Level
Shared: 1 zone
Livingston's Cichlid
MiddleBottom
Mono Sebae (Brackish)
Middle
🏷️Behavior Tags
Livingston's Cichlid
Piscivore (Eats small/nano fish)Generally AggressiveTerritorial (Defends specific area)Aggressive to same species/look-alikesDigger (Disturbs Substrate)
Mono Sebae (Brackish)
Hyperactive / Fast SwimmerPlant DestroyerShrimp EaterAggressive Eater (Starves shy fish)
Stocking calculator

Can your tank handle Livingston's Cichlid and Mono Sebae (Brackish)?

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.

Livingston's Cichlid
Mono Sebae (Brackish)
Test both in my tank

Behaviour & Temperament

Livingston's Cichlid is a semi-aggressive species (8/10), while Mono Sebae (Brackish) is generally mild-mannered (4/10). This notable difference means Livingston's Cichlid may occasionally assert dominance over Mono Sebae (Brackish).

Livingston's Cichlid and Mono Sebae (Brackish) 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 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

Both fish can tolerate a pH between 7.6 and 8.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 12–25 dGH. Regular testing will ensure conditions stay within this range.

Crucially, these species require different water types — one needs freshwater while the other requires brackish conditions. This is a hard barrier to keeping them together.

Tank Setup

To house Livingston's Cichlid and Mono Sebae (Brackish) together, plan for an aquarium of at least 546 litres with a minimum length of 150 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). 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

Livingston's Cichlid and Mono Sebae (Brackish) 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 Livingston's Cichlid and Mono Sebae (Brackish).

Frequently Asked Questions

Can Livingston's Cichlid and Mono Sebae (Brackish) live together?

No. This combination is not recommended. Key incompatibilities — such as different water type needs — make cohabitation unsafe.

What size tank do Livingston's Cichlid and Mono Sebae (Brackish) need?

A minimum of 546 litres (tank length at least 150 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 Livingston's Cichlid and Mono Sebae (Brackish) 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 Livingston's Cichlid or Mono Sebae (Brackish) aggressive?

Livingston's Cichlid is semi-aggressive (8/10) and Mono Sebae (Brackish) is generally mild-mannered (4/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Livingston's Cichlid and Mono Sebae (Brackish) need?

Both species overlap in the 7.6–8.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

How do I manage Livingston's Cichlid's territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Livingston's 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.

Editorial Review

Guidarium Editorial Desk

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

Last reviewed
May 7, 2026
Last updated
May 7, 2026
Issues or corrections?
Contact the editorial team

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