Can Sixbar Distichodus and Taiwan Reef Cichlid Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 11, 2026
Not Recommended

Sixbar Distichodus and Taiwan Reef Cichlid are not recommended as tank mates due to conflicting pH requirements. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Sixbar Distichodus

Distichodus sexfasciatus

Taiwan Reef Cichlid

Protomelas sp. "Steveni Taiwan"

🐠Family Group
Sixbar Distichodus
Characins
Taiwan Reef Cichlid
Cichlids - African
Temperament
Sixbar Distichodus
Aggressive (7/10)
Taiwan Reef Cichlid
Semi-Aggressive (6/10)
Temperature
✓ Compatible
Sixbar Distichodus
22–26°C
Taiwan Reef Cichlid
24–28°C
pH Range
✗ No overlap
Sixbar Distichodus
6–7.5
Taiwan Reef Cichlid
7.8–8.6
Hardness (dGH)
✓ Compatible
Sixbar Distichodus
10–20
Taiwan Reef Cichlid
10–20
Water Type
✓ Compatible
Sixbar Distichodus
Freshwater Only
Taiwan Reef Cichlid
Freshwater Only
Flow Preference
✓ Compatible
Sixbar Distichodus
Moderate
Taiwan Reef Cichlid
Moderate
Min Tank Volume
Combined: 1000 L
Sixbar Distichodus
1000 L
Taiwan Reef Cichlid
280 L
Swimming Level
Shared: 2 zones
Sixbar Distichodus
MiddleBottom
Taiwan Reef Cichlid
MiddleBottom
🏷️Behavior Tags
Sixbar Distichodus
Plant DestroyerAggressive to same species/look-alikesJumper (Lid Required)Hyperactive / Fast SwimmerFin Nipper
Taiwan Reef Cichlid
Territorial (Defends specific area)Aggressive to same species/look-alikesHyperactive / Fast SwimmerDigger (Disturbs Substrate)Plant DestroyerFry Predator
Stocking calculator

Can your tank handle Sixbar Distichodus and Taiwan Reef Cichlid?

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.

Sixbar Distichodus
Taiwan Reef Cichlid
Test both in my tank

Behaviour & Temperament

Sixbar Distichodus is a semi-aggressive species (7/10), while Taiwan Reef Cichlid is moderately assertive (6/10). This modest difference means Sixbar Distichodus may occasionally assert dominance over Taiwan Reef Cichlid.

Sixbar Distichodus and Taiwan Reef Cichlid both frequent the Middle (Open Water) and Bottom (Substrate) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.

Worth noting: Sixbar Distichodus is a known jumper, so a tight-fitting lid is essential.

Water Parameters

The safe temperature window for both species falls between 24°C and 26°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.

The pH requirements of Sixbar Distichodus (6–7.5) and Taiwan Reef Cichlid (7.8–8.6) do not overlap, making it impossible to satisfy both species simultaneously.

For general hardness, the shared comfort zone is 10–20 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Sixbar Distichodus and Taiwan Reef Cichlid together, plan for an aquarium of at least 1000 litres with a minimum length of 200 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), Driftwood (Digestion/Hiding). 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

Sixbar Distichodus and Taiwan Reef Cichlid 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.

Frequently Asked Questions

Can Sixbar Distichodus and Taiwan Reef Cichlid live together?

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

What size tank do Sixbar Distichodus and Taiwan Reef Cichlid need?

A minimum of 1000 litres (tank length at least 200 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 Sixbar Distichodus and Taiwan Reef Cichlid together?

Keep the aquarium between 24°C and 26°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.

Are Sixbar Distichodus or Taiwan Reef Cichlid aggressive?

Sixbar Distichodus is semi-aggressive (7/10) and Taiwan Reef Cichlid is moderately assertive (6/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Sixbar Distichodus and Taiwan Reef Cichlid need?

Their pH requirements do not overlap. Sixbar Distichodus prefers 6–7.5, while Taiwan Reef Cichlid needs 7.8–8.6. This makes them incompatible in the same water chemistry.

Will Sixbar Distichodus nip Taiwan Reef Cichlid's fins?

Sixbar Distichodus is a known fin nipper. If Taiwan Reef Cichlid has long or flowing fins, there is a real risk of fin damage. Keeping Sixbar Distichodus in a larger group can help redirect nipping behaviour toward conspecifics.

How do I manage Taiwan Reef Cichlid's territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Taiwan Reef 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 11, 2026
Last updated
May 11, 2026
Issues or corrections?
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