Can Black Skirt Tetra and Wrestling Halfbeak Live Together?

🟢Ideal Tank Mates

Yes, Black Skirt Tetra and Wrestling Halfbeak are ideal tank mates. Both species share compatible water parameters and peaceful temperaments, making them well-suited for a community aquarium. They occupy different areas of the water column, which reduces competition for space. A minimum tank size of 66 litres is recommended.


At a Glance

Black Skirt Tetra

Gymnocorymbus ternetzi

Wrestling Halfbeak

Dermogenys pusilla

🐠Family Group
Black Skirt Tetra
Characins
Wrestling Halfbeak
Livebearers
Temperament
Black Skirt Tetra
Mostly Peaceful (4/10)
Wrestling Halfbeak
Mostly Peaceful (4/10)
Temperature
✓ Compatible
Black Skirt Tetra
20–26°C
Wrestling Halfbeak
24–28°C
pH Range
✓ Compatible
Black Skirt Tetra
6–8
Wrestling Halfbeak
7–8.5
Hardness (dGH)
✓ Compatible
Black Skirt Tetra
3–15
Wrestling Halfbeak
10–20
Water Type
✓ Compatible
Black Skirt Tetra
Freshwater Only
Wrestling Halfbeak
Brackish Tolerant
Flow Preference
✓ Compatible
Black Skirt Tetra
Moderate
Wrestling Halfbeak
Moderate
Min Tank Volume
Combined: 66 L
Black Skirt Tetra
55 L
Wrestling Halfbeak
55 L
Swimming Level
✓ Different zones
Black Skirt Tetra
Middle
Wrestling Halfbeak
Top
🏷️Behavior Tags
Black Skirt Tetra
Hyperactive / Fast SwimmerFin Nipper
Wrestling Halfbeak
Jumper (Lid Required)Hyperactive / Fast SwimmerFry PredatorAggressive to same species/look-alikes

Behaviour & Temperament

Both Black Skirt Tetra and Wrestling Halfbeak are generally mild-mannered species with an aggression score of 4/10. Their matching temperaments mean neither fish is likely to dominate the other in a shared aquarium.

In terms of spatial distribution, Black Skirt Tetra prefers the Middle (Open Water) zone, whereas Wrestling Halfbeak occupies the Top (Surface) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

Worth noting: Wrestling Halfbeak 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.

Both fish can tolerate a pH between 7 and 8. Maintaining a stable value within this band is more important than hitting an exact number.

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

Tank Setup

To house Black Skirt Tetra and Wrestling Halfbeak together, plan for an aquarium of at least 66 litres with a minimum length of 60 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: 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.

Frequently Asked Questions

Can Black Skirt Tetra and Wrestling Halfbeak live together?

Yes. Black Skirt Tetra and Wrestling Halfbeak are considered ideal tank mates. Their water parameters, temperaments, and behaviour profiles are well matched for a community aquarium.

What size tank do Black Skirt Tetra and Wrestling Halfbeak need?

A minimum of 66 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 Black Skirt Tetra and Wrestling Halfbeak 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 Black Skirt Tetra or Wrestling Halfbeak aggressive?

Black Skirt Tetra is generally mild-mannered (4/10) and Wrestling Halfbeak is generally mild-mannered (4/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Black Skirt Tetra and Wrestling Halfbeak need?

Both species overlap in the 7–8 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Will Black Skirt Tetra nip Wrestling Halfbeak's fins?

Black Skirt Tetra is a known fin nipper. If Wrestling Halfbeak has long or flowing fins, there is a real risk of fin damage. Keeping Black Skirt Tetra in a larger group can help redirect nipping behaviour toward conspecifics.


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