Can Licorice Gourami and Pacific Blue Eye Live Together?

Reviewed by Guidarium Editorial DeskUpdated May 7, 2026
Not Recommended

Licorice Gourami and Pacific Blue Eye are not recommended as tank mates due to conflicting pH requirements and incompatible hardness ranges. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Licorice Gourami

Parosphromenus deissneri

Pacific Blue Eye

Pseudomugil signifer

🐠Family Group
Licorice Gourami
Anabantoids
Pacific Blue Eye
Rainbowfish
Temperament
Licorice Gourami
Peaceful (2/10)
Pacific Blue Eye
Peaceful (2/10)
Temperature
✓ Compatible
Licorice Gourami
22–28°C
Pacific Blue Eye
20–26°C
pH Range
✗ No overlap
Licorice Gourami
3–6
Pacific Blue Eye
6.5–8
Hardness (dGH)
✗ No overlap
Licorice Gourami
0–4
Pacific Blue Eye
5–15
Water Type
✓ Compatible
Licorice Gourami
Freshwater Only
Pacific Blue Eye
Brackish Tolerant
Flow Preference
✓ Compatible
Licorice Gourami
Low
Pacific Blue Eye
Moderate
Min Tank Volume
Combined: 60 L
Licorice Gourami
19 L
Pacific Blue Eye
60 L
Swimming Level
Shared: 1 zone
Licorice Gourami
MiddleBottom
Pacific Blue Eye
TopMiddle
🏷️Behavior Tags
Licorice Gourami
Nano / Bite-sized (Predation Risk)Shy / Slow Moving (Easily Stressed)
Pacific Blue Eye
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)Fry Predator
Stocking calculator

Can your tank handle Licorice Gourami and Pacific 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.

Licorice Gourami
Pacific Blue Eye
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Behaviour & Temperament

Both Licorice Gourami and Pacific Blue Eye are peaceful species with an aggression score of 2/10. Their matching temperaments mean neither fish is likely to dominate the other in a shared aquarium.

Licorice Gourami and Pacific 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.

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

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

Water Parameters

The safe temperature window for both species falls between 22°C and 26°C. Aim for the midpoint of this range (around 24.0°C) for optimal comfort.

The pH requirements of Licorice Gourami (3–6) and Pacific Blue Eye (6.5–8) do not overlap, making it impossible to satisfy both species simultaneously.

Hardness requirements are incompatible: Licorice Gourami needs 0–4 dGH while Pacific Blue Eye requires 5–15 dGH.

Tank Setup

To house Licorice Gourami and Pacific Blue Eye 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: Leaf Litter/Blackwater, Plants - Densely covered, Plants - Floating, Driftwood (Digestion/Hiding). Meeting these requirements will help both species thrive.

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

Why This Pairing Usually Fails in Practice

Licorice Gourami and Pacific 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 Licorice Gourami and Pacific Blue Eye.

Show 19 more tank sizes

Frequently Asked Questions

Can Licorice Gourami and Pacific Blue Eye live together?

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

What size tank do Licorice Gourami and Pacific Blue Eye 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 Licorice Gourami and Pacific Blue Eye together?

Keep the aquarium between 22°C and 26°C. A target of around 24.0°C sits comfortably within both species' preferred ranges.

Are Licorice Gourami or Pacific Blue Eye aggressive?

Licorice Gourami is peaceful (2/10) and Pacific Blue Eye is peaceful (2/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Licorice Gourami and Pacific Blue Eye need?

Their pH requirements do not overlap. Licorice Gourami prefers 3–6, while Pacific Blue Eye needs 6.5–8. This makes them incompatible in the same water chemistry.

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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