Can Black Skirt Tetra and Celebes Rainbowfish Live Together?

🟢Ideal Tank Mates

Yes, Black Skirt Tetra and Celebes Rainbowfish 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 90 litres is recommended.


At a Glance

Black Skirt Tetra

Gymnocorymbus ternetzi

Celebes Rainbowfish

Marosatherina ladigesi

🐠Family Group
Black Skirt Tetra
Characins
Celebes Rainbowfish
Rainbowfish
Temperament
Black Skirt Tetra
Mostly Peaceful (4/10)
Celebes Rainbowfish
Peaceful (2/10)
Temperature
✓ Compatible
Black Skirt Tetra
20–26°C
Celebes Rainbowfish
22–28°C
pH Range
✓ Compatible
Black Skirt Tetra
6–8
Celebes Rainbowfish
7–8.5
Hardness (dGH)
✓ Compatible
Black Skirt Tetra
3–15
Celebes Rainbowfish
10–25
Water Type
✓ Compatible
Black Skirt Tetra
Freshwater Only
Celebes Rainbowfish
Brackish Tolerant
Flow Preference
✓ Compatible
Black Skirt Tetra
Moderate
Celebes Rainbowfish
Moderate
Min Tank Volume
Combined: 90 L
Black Skirt Tetra
55 L
Celebes Rainbowfish
75 L
Swimming Level
Shared: 1 zone
Black Skirt Tetra
Middle
Celebes Rainbowfish
TopMiddle
🏷️Behavior Tags
Black Skirt Tetra
Hyperactive / Fast SwimmerFin Nipper
Celebes Rainbowfish
Hyperactive / Fast SwimmerJumper (Lid Required)Fry Predator

Behaviour & Temperament

Black Skirt Tetra is a generally mild-mannered species (4/10), while Celebes Rainbowfish is peaceful (2/10). This modest difference means Black Skirt Tetra may occasionally assert dominance over Celebes Rainbowfish.

Black Skirt Tetra and Celebes Rainbowfish 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.

Worth noting: Celebes Rainbowfish 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.

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 Celebes Rainbowfish together, plan for an aquarium of at least 90 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 - lighly covered. 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 Celebes Rainbowfish live together?

Yes. Black Skirt Tetra and Celebes Rainbowfish 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 Celebes Rainbowfish need?

A minimum of 90 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 Celebes Rainbowfish 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 Black Skirt Tetra or Celebes Rainbowfish aggressive?

Black Skirt Tetra is generally mild-mannered (4/10) and Celebes Rainbowfish is peaceful (2/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Black Skirt Tetra and Celebes Rainbowfish 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 Celebes Rainbowfish's fins?

Black Skirt Tetra is a known fin nipper. If Celebes Rainbowfish 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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