Can Masked Julie (Julidochromis) and Panda Tetra Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026
Not Recommended

Masked Julie (Julidochromis) and Panda Tetra 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

Masked Julie (Julidochromis)

Julidochromis transcriptus

Panda Tetra

Aphyocharax paraguayensis

🐠Family Group
Masked Julie (Julidochromis)
Cichlids - African
Panda Tetra
Characins
Temperament
Masked Julie (Julidochromis)
Semi-Aggressive (6/10)
Panda Tetra
Mostly Peaceful (4/10)
Temperature
✓ Compatible
Masked Julie (Julidochromis)
23–27°C
Panda Tetra
22–28°C
pH Range
✗ No overlap
Masked Julie (Julidochromis)
8–9
Panda Tetra
5.5–7.5
Hardness (dGH)
✓ Compatible
Masked Julie (Julidochromis)
10–20
Panda Tetra
2–15
Water Type
✓ Compatible
Masked Julie (Julidochromis)
Freshwater Only
Panda Tetra
Freshwater Only
Flow Preference
✓ Compatible
Masked Julie (Julidochromis)
Moderate
Panda Tetra
Moderate
Min Tank Volume
Combined: 60 L
Masked Julie (Julidochromis)
60 L
Panda Tetra
60 L
Swimming Level
Shared: 1 zone
Masked Julie (Julidochromis)
BottomMiddle
Panda Tetra
TopMiddle
🏷️Behavior Tags
Masked Julie (Julidochromis)
Territorial (Defends specific area)Aggressive to same species/look-alikesFry PredatorShy / Slow Moving (Easily Stressed)
Panda Tetra
Fin NipperHyperactive / Fast SwimmerJumper (Lid Required)
Stocking calculator

Can your tank handle Masked Julie (Julidochromis) and Panda 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.

Masked Julie (Julidochromis)
Panda Tetra
Test both in my tank

Behaviour & Temperament

Masked Julie (Julidochromis) is a moderately assertive species (6/10), while Panda Tetra is generally mild-mannered (4/10). This modest difference means Masked Julie (Julidochromis) may occasionally assert dominance over Panda Tetra.

Masked Julie (Julidochromis) and Panda 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.

Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion.

Worth noting: Panda Tetra is a known jumper, so a tight-fitting lid is essential.

Water Parameters

The safe temperature window for both species falls between 23°C and 27°C. Aim for the midpoint of this range (around 25.0°C) for optimal comfort.

The pH requirements of Masked Julie (Julidochromis) (8–9) and Panda Tetra (5.5–7.5) do not overlap, making it impossible to satisfy both species simultaneously.

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

Tank Setup

To house Masked Julie (Julidochromis) and Panda Tetra together, plan for an aquarium of at least 60 litres with a minimum length of 60 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

Masked Julie (Julidochromis) and Panda Tetra 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 Masked Julie (Julidochromis) and Panda Tetra.

Show 19 more tank sizes

Frequently Asked Questions

Can Masked Julie (Julidochromis) and Panda Tetra live together?

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

What size tank do Masked Julie (Julidochromis) and Panda Tetra need?

A minimum of 60 litres (tank length at least 60 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 Masked Julie (Julidochromis) and Panda Tetra together?

Keep the aquarium between 23°C and 27°C. A target of around 25.0°C sits comfortably within both species' preferred ranges.

Are Masked Julie (Julidochromis) or Panda Tetra aggressive?

Masked Julie (Julidochromis) is moderately assertive (6/10) and Panda Tetra is generally mild-mannered (4/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Masked Julie (Julidochromis) and Panda Tetra need?

Their pH requirements do not overlap. Masked Julie (Julidochromis) prefers 8–9, while Panda Tetra needs 5.5–7.5. This makes them incompatible in the same water chemistry.

Will Panda Tetra nip Masked Julie (Julidochromis)'s fins?

Panda Tetra is a known fin nipper. If Masked Julie (Julidochromis) has long or flowing fins, there is a real risk of fin damage. Keeping Panda Tetra in a larger group can help redirect nipping behaviour toward conspecifics.

How do I manage Masked Julie (Julidochromis)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Masked Julie (Julidochromis) 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?
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