Can Apistogramma baenschi (Inca 50) and Blind Cave Tetra Live Together?
Apistogramma baenschi (Inca 50) and Blind Cave Tetra are not recommended as tank mates due to incompatible hardness ranges. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.
At a Glance
Can your tank handle Apistogramma baenschi (Inca 50) 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.
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Behaviour & Temperament
Apistogramma baenschi (Inca 50) is a moderately assertive species (5/10), while Blind Cave Tetra is generally mild-mannered (4/10). This modest difference means Apistogramma baenschi (Inca 50) may occasionally assert dominance over Blind Cave Tetra.
Apistogramma baenschi (Inca 50) and Blind Cave Tetra both frequent the 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.
Water Parameters
The safe temperature window for both species falls between 22°C and 25°C. Aim for the midpoint of this range (around 23.5°C) for optimal comfort.
Both fish can tolerate a pH between 6.5 and 6.5. Maintaining a stable value within this band is more important than hitting an exact number.
Hardness requirements are incompatible: Apistogramma baenschi (Inca 50) needs 1–5 dGH while Blind Cave Tetra requires 8–20 dGH.
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Tank Setup
To house Apistogramma baenschi (Inca 50) 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.
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), Leaf Litter/Blackwater, Driftwood (Digestion/Hiding), 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 Apistogramma baenschi (Inca 50) and Blind Cave Tetra.
30 Gallon Breeder
40 Gallon Breeder
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
Show 12 more tank sizes
Diet & Feeding
Feeding time deserves special attention with this pairing. Blind Cave Tetra is an aggressive eater that may prevent Apistogramma baenschi (Inca 50) 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 Apistogramma baenschi (Inca 50) receives an adequate share.
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Frequently Asked Questions
Can Apistogramma baenschi (Inca 50) and Blind Cave Tetra live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Apistogramma baenschi (Inca 50) 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 Apistogramma baenschi (Inca 50) and Blind Cave Tetra together?
Keep the aquarium between 22°C and 25°C. A target of around 23.5°C sits comfortably within both species' preferred ranges.
Are Apistogramma baenschi (Inca 50) or Blind Cave Tetra aggressive?
Apistogramma baenschi (Inca 50) is moderately assertive (5/10) and Blind Cave Tetra is generally mild-mannered (4/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Apistogramma baenschi (Inca 50) and Blind Cave Tetra need?
Both species overlap in the 6.5–6.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
Will Blind Cave Tetra nip Apistogramma baenschi (Inca 50)'s fins?
Blind Cave Tetra is a known fin nipper. If Apistogramma baenschi (Inca 50) 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.
How do I manage Apistogramma baenschi (Inca 50)'s territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Apistogramma baenschi (Inca 50) space to claim a territory without encroaching on the other fish's area. Adding décor that divides the tank into distinct zones works especially well.
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