Can Blind Cave Tetra and White Cloud Mountain Minnow Live Together?

🟢Ideal Tank Mates

Yes, Blind Cave Tetra and White Cloud Mountain Minnow 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 132 litres is recommended.


At a Glance

Blind Cave Tetra

Astyanax mexicanus

White Cloud Mountain Minnow

Tanichthys albonubes

🐠Family Group
Blind Cave Tetra
Characins
White Cloud Mountain Minnow
Cyprinids
Temperament
Blind Cave Tetra
Mostly Peaceful (4/10)
White Cloud Mountain Minnow
Peaceful (1/10)
Temperature
✓ Compatible
Blind Cave Tetra
20–25°C
White Cloud Mountain Minnow
14–22°C
pH Range
✓ Compatible
Blind Cave Tetra
6.5–8
White Cloud Mountain Minnow
6–8
Hardness (dGH)
✓ Compatible
Blind Cave Tetra
8–20
White Cloud Mountain Minnow
5–20
Water Type
✓ Compatible
Blind Cave Tetra
Freshwater Only
White Cloud Mountain Minnow
Freshwater Only
Flow Preference
✓ Compatible
Blind Cave Tetra
Moderate
White Cloud Mountain Minnow
Moderate
Min Tank Volume
Combined: 132 L
Blind Cave Tetra
110 L
White Cloud Mountain Minnow
38 L
Swimming Level
Shared: 1 zone
Blind Cave Tetra
MiddleBottom
White Cloud Mountain Minnow
TopMiddle
🏷️Behavior Tags
Blind Cave Tetra
Hyperactive / Fast SwimmerFin NipperAggressive Eater (Starves shy fish)
White Cloud Mountain Minnow
Nano / Bite-sized (Predation Risk)Hyperactive / Fast SwimmerJumper (Lid Required)

Behaviour & Temperament

Blind Cave Tetra is a generally mild-mannered species (4/10), while White Cloud Mountain Minnow is peaceful (1/10). This modest difference means Blind Cave Tetra may occasionally assert dominance over White Cloud Mountain Minnow.

Blind Cave Tetra and White Cloud Mountain Minnow 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: White Cloud Mountain Minnow is a known jumper, so a tight-fitting lid is essential.

Water Parameters

The safe temperature window for both species falls between 20°C and 22°C. Aim for the midpoint of this range (around 21.0°C) for optimal comfort.

Both fish can tolerate a pH between 6.5 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 8–20 dGH. Regular testing will ensure conditions stay within this range. An aquarium test kit is recommended for monitoring.

Tank Setup

To house Blind Cave Tetra and White Cloud Mountain Minnow together, plan for an aquarium of at least 132 litres with a minimum length of 80 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: Smooth Gravel (Sensitive Barbels), Plants - Densely 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.

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Frequently Asked Questions

Can Blind Cave Tetra and White Cloud Mountain Minnow live together?

Yes. Blind Cave Tetra and White Cloud Mountain Minnow are considered ideal tank mates. Their water parameters, temperaments, and behaviour profiles are well matched for a community aquarium.

What size tank do Blind Cave Tetra and White Cloud Mountain Minnow need?

A minimum of 132 litres (tank length at least 80 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 Blind Cave Tetra and White Cloud Mountain Minnow together?

Keep the aquarium between 20°C and 22°C. A target of around 21.0°C sits comfortably within both species' preferred ranges.

Are Blind Cave Tetra or White Cloud Mountain Minnow aggressive?

Blind Cave Tetra is generally mild-mannered (4/10) and White Cloud Mountain Minnow is peaceful (1/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Blind Cave Tetra and White Cloud Mountain Minnow need?

Both species overlap in the 6.5–8 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Will Blind Cave Tetra nip White Cloud Mountain Minnow's fins?

Blind Cave Tetra is a known fin nipper. If White Cloud Mountain Minnow has long or flowing fins, there is a real risk of fin damage. Keeping Blind Cave Tetra in a larger group can help redirect nipping behaviour toward conspecifics.


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