Can African Pipefish and Blind Cave Tetra Live Together?

Possible with Caution

Keeping African Pipefish and Blind Cave Tetra together is possible but requires caution due to differing aggression levels and potential behavioral clashes. Provide a spacious tank of at least 110 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

African Pipefish

Enneacampus ansorgii

Blind Cave Tetra

Astyanax mexicanus

🐠Family Group
African Pipefish
Oddballs
Blind Cave Tetra
Characins
Temperament
African Pipefish
Peaceful (0/10)
Blind Cave Tetra
Mostly Peaceful (4/10)
Temperature
✓ Compatible
African Pipefish
24–28°C
Blind Cave Tetra
20–25°C
pH Range
✓ Compatible
African Pipefish
6–7.5
Blind Cave Tetra
6.5–8
Hardness (dGH)
✓ Compatible
African Pipefish
4–15
Blind Cave Tetra
8–20
Water Type
✓ Compatible
African Pipefish
Brackish Tolerant
Blind Cave Tetra
Freshwater Only
Flow Preference
✓ Compatible
African Pipefish
Low
Blind Cave Tetra
Moderate
Min Tank Volume
Combined: 110 L
African Pipefish
75 L
Blind Cave Tetra
110 L
Swimming Level
Shared: 2 zones
African Pipefish
MiddleBottom
Blind Cave Tetra
MiddleBottom
🏷️Behavior Tags
African Pipefish
Shy / Slow Moving (Easily Stressed)Fry Predator
Blind Cave Tetra
Hyperactive / Fast SwimmerFin NipperAggressive Eater (Starves shy fish)
Stocking calculator

Can your tank handle African Pipefish and Blind Cave Tetra?

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.

African Pipefish
Blind Cave Tetra
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Behaviour & Temperament

African Pipefish is a peaceful species (0/10), while Blind Cave Tetra is generally mild-mannered (4/10). This notable difference means Blind Cave Tetra may occasionally assert dominance over African Pipefish.

African Pipefish and Blind Cave Tetra 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.

Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion. Aggressive eaters may outcompete shy fish for food, leading to malnutrition.

To improve the chances of a peaceful coexistence in this community tank: A larger aquarium with ample hiding spots can help diffuse aggression and give the less dominant fish space to retreat. Keep fin nippers in larger groups to distribute nipping behaviour among conspecifics rather than tank mates.

Water Parameters

The safe temperature window for both species falls between 24°C and 25°C. Aim for the midpoint of this range (around 24.5°C) for optimal comfort.

Both fish can tolerate a pH between 6.5 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 8–15 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house African Pipefish and Blind Cave Tetra together, plan for an aquarium of at least 110 litres with a minimum length of 80 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

Because this pairing requires extra vigilance, include plenty of hiding spots — caves, driftwood, and dense plant clusters — so the less dominant fish can retreat when needed.

Specific environmental needs for this combination include: Plants - Densely covered, Smooth Gravel (Sensitive Barbels). 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.

Suitable Tank Sizes

Standard aquarium sizes large enough for both African Pipefish and Blind Cave Tetra.

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Diet & Feeding

Feeding time deserves special attention with this pairing. Blind Cave Tetra is an aggressive eater that may prevent African Pipefish from getting enough food.

Because Blind Cave Tetra is a fast, competitive feeder, consider using sinking pellets or feeding at opposite ends of the setup to ensure African Pipefish receives an adequate share.

Frequently Asked Questions

Can African Pipefish and Blind Cave Tetra live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 110 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do African Pipefish and Blind Cave Tetra need?

A minimum of 110 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 African Pipefish and Blind Cave Tetra together?

Keep the aquarium between 24°C and 25°C. A target of around 24.5°C sits comfortably within both species' preferred ranges.

Are African Pipefish or Blind Cave Tetra aggressive?

African Pipefish is peaceful (0/10) and Blind Cave Tetra is generally mild-mannered (4/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do African Pipefish and Blind Cave Tetra need?

Both species overlap in the 6.5–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Will Blind Cave Tetra nip African Pipefish's fins?

Blind Cave Tetra is a known fin nipper. If African Pipefish 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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