Can Blind Cave Tetra and Two-spot Apistogramma Live Together?
Keeping Blind Cave Tetra and Two-spot Apistogramma together is possible but requires caution, though some care is needed. 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
Can your tank handle Blind Cave Tetra and Two-spot Apistogramma?
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.
Shared setup supplies
We may earn from qualifying purchases
Behaviour & Temperament
Blind Cave Tetra is a generally mild-mannered species (4/10), while Two-spot Apistogramma is moderately assertive (5/10). This modest difference means Two-spot Apistogramma may occasionally assert dominance over Blind Cave Tetra.
Blind Cave Tetra and Two-spot Apistogramma 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.
To improve the chances of a peaceful coexistence in this community tank: Provide a significantly larger tank (at least 50% more volume than the minimum) to allow both Blind Cave Tetra and Two-spot Apistogramma to establish separate territories. Add plenty of line-of-sight breaks using driftwood, rocks, and dense planting to reduce territorial confrontations. 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 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 7. Maintaining a stable value within this band is more important than hitting an exact number.
For general hardness, the shared comfort zone is 8–10 dGH. Regular testing will ensure conditions stay within this range.
Water care products
We may earn from qualifying purchases
Tank Setup
To house Blind Cave Tetra and Two-spot Apistogramma 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: Smooth Gravel (Sensitive Barbels), Sand (Sifters), Leaf Litter/Blackwater, Plants - Densely covered, Driftwood (Digestion/Hiding). 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.
Suitable Tank Sizes
Standard aquarium sizes large enough for both Blind Cave Tetra and Two-spot Apistogramma.
30 Gallon Breeder
40 Gallon Breeder
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
Show 12 more tank sizes
Feeding products to consider
We may earn from qualifying purchases
.webp?2026-04-25T14%3A35%3A38.022Z)
Frequently Asked Questions
Can Blind Cave Tetra and Two-spot Apistogramma 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 Blind Cave Tetra and Two-spot Apistogramma 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 Blind Cave Tetra and Two-spot Apistogramma 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 Blind Cave Tetra or Two-spot Apistogramma aggressive?
Blind Cave Tetra is generally mild-mannered (4/10) and Two-spot Apistogramma is moderately assertive (5/10). Their similar temperaments generally lead to a peaceful coexistence.
What pH do Blind Cave Tetra and Two-spot Apistogramma need?
Both species overlap in the 6.5–7 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
Will Blind Cave Tetra nip Two-spot Apistogramma's fins?
Blind Cave Tetra is a known fin nipper. If Two-spot Apistogramma 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 Two-spot Apistogramma's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Two-spot Apistogramma 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.
Related Comparisons
Blind Cave Tetra & Black Pacu
·
Blind Cave Tetra & Serpae Tetra
·
Blind Cave Tetra & Bentos Tetra
·
Blind Cave Tetra & Black Skirt Tetra
·
Blind Cave Tetra & Bleeding Heart Tetra
·
Blind Cave Tetra & Bloodfin Tetra
·
Two-spot Apistogramma & Aequidens diadema (Diadem Cichlid)
·
Two-spot Apistogramma & Aequidens sp. Atabapo
·
Two-spot Apistogramma & Agassiz's Dwarf Cichlid
·
Two-spot Apistogramma & Apistogramma atahualpa
·
Two-spot Apistogramma & Apistogramma baenschi (Inca 50)
·
Two-spot Apistogramma & Apistogramma Black-Chin
·