Can Blue Dolphin (Hap) and Empire Gudgeon Live Together?

🟢Ideal Tank Mates

Yes, Blue Dolphin (Hap) and Empire Gudgeon are ideal tank mates. Both species share compatible water parameters and peaceful temperaments, making them well-suited for a community aquarium. A minimum tank size of 570 litres is recommended.


At a Glance

Blue Dolphin (Hap)

Cyrtocara moorii

Empire Gudgeon

Hypseleotris compressa

🐠Family Group
Blue Dolphin (Hap)
Cichlids - African
Empire Gudgeon
Gobies & Gudgeons
Temperament
Blue Dolphin (Hap)
Semi-Aggressive (5/10)
Empire Gudgeon
Mostly Peaceful (3/10)
Temperature
✓ Compatible
Blue Dolphin (Hap)
24–28°C
Empire Gudgeon
20–28°C
pH Range
✓ Compatible
Blue Dolphin (Hap)
7.5–8.6
Empire Gudgeon
6.5–8.5
Hardness (dGH)
✓ Compatible
Blue Dolphin (Hap)
10–25
Empire Gudgeon
5–20
Water Type
✓ Compatible
Blue Dolphin (Hap)
Freshwater Only
Empire Gudgeon
Brackish Tolerant
Flow Preference
✓ Compatible
Blue Dolphin (Hap)
Moderate
Empire Gudgeon
Moderate
Min Tank Volume
Combined: 570 L
Blue Dolphin (Hap)
475 L
Empire Gudgeon
110 L
Swimming Level
Shared: 2 zones
Blue Dolphin (Hap)
MiddleBottom
Empire Gudgeon
MiddleBottom
🏷️Behavior Tags
Blue Dolphin (Hap)
Digger (Disturbs Substrate)Hyperactive / Fast SwimmerAggressive to same species/look-alikes
Empire Gudgeon
Shrimp EaterFry PredatorHyperactive / Fast SwimmerJumper (Lid Required)

Behaviour & Temperament

Blue Dolphin (Hap) is a moderately assertive species (5/10), while Empire Gudgeon is generally mild-mannered (3/10). This modest difference means Blue Dolphin (Hap) may occasionally assert dominance over Empire Gudgeon.

Blue Dolphin (Hap) and Empire Gudgeon 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: Empire Gudgeon 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 28°C. Aim for the midpoint of this range (around 26.0°C) for optimal comfort.

Both fish can tolerate a pH between 7.5 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 10–20 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Blue Dolphin (Hap) and Empire Gudgeon together, plan for an aquarium of at least 570 litres with a minimum length of 150 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

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), Plants - Densely covered, 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.

Frequently Asked Questions

Can Blue Dolphin (Hap) and Empire Gudgeon live together?

Yes. Blue Dolphin (Hap) and Empire Gudgeon are considered ideal tank mates. Their water parameters, temperaments, and behaviour profiles are well matched for a community aquarium.

What size tank do Blue Dolphin (Hap) and Empire Gudgeon need?

A minimum of 570 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 Blue Dolphin (Hap) and Empire Gudgeon 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 Blue Dolphin (Hap) or Empire Gudgeon aggressive?

Blue Dolphin (Hap) is moderately assertive (5/10) and Empire Gudgeon is generally mild-mannered (3/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Blue Dolphin (Hap) and Empire Gudgeon need?

Both species overlap in the 7.5–8.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.


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