Can Apistogramma uaupesi and Zebra Spiny Eel Live Together?

Not Recommended

Apistogramma uaupesi and Zebra Spiny Eel are not recommended as tank mates due to conflicting pH requirements. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Apistogramma uaupesi

Apistogramma uaupesi

Zebra Spiny Eel

Mastacembelus zebrinus

🐠Family Group
Apistogramma uaupesi
Cichlids - South American
Zebra Spiny Eel
Oddballs
Temperament
Apistogramma uaupesi
Semi-Aggressive (5/10)
Zebra Spiny Eel
Peaceful (2/10)
Temperature
βœ“ Compatible
Apistogramma uaupesi
24–29Β°C
Zebra Spiny Eel
22–26Β°C
pH Range
βœ— No overlap
Apistogramma uaupesi
4–6
Zebra Spiny Eel
6.8–8
Hardness (dGH)
βœ“ Compatible
Apistogramma uaupesi
0–5
Zebra Spiny Eel
5–15
Water Type
βœ“ Compatible
Apistogramma uaupesi
Freshwater Only
Zebra Spiny Eel
Freshwater Only
Flow Preference
βœ“ Compatible
Apistogramma uaupesi
Low
Zebra Spiny Eel
Moderate
Min Tank Volume
Combined: 110 L
Apistogramma uaupesi
60 L
Zebra Spiny Eel
110 L
Swimming Level
Shared: 1 zone
Apistogramma uaupesi
Bottom
Zebra Spiny Eel
Bottom
🏷️Behavior Tags
Apistogramma uaupesi
Territorial (Defends specific area)Shrimp EaterFry PredatorShy / Slow Moving (Easily Stressed)
Zebra Spiny Eel
Digger (Disturbs Substrate)Jumper (Lid Required)Shrimp EaterFry PredatorShy / Slow Moving (Easily Stressed)Nocturnal
Stocking calculator

Can your tank handle Apistogramma uaupesi and Zebra Spiny Eel?

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.

Apistogramma uaupesi
Zebra Spiny Eel
Test both in my tank

Behaviour & Temperament

Apistogramma uaupesi is a moderately assertive species (5/10), while Zebra Spiny Eel is peaceful (2/10). This modest difference means Apistogramma uaupesi may occasionally assert dominance over Zebra Spiny Eel.

Apistogramma uaupesi and Zebra Spiny Eel 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.

Worth noting: Zebra Spiny Eel is nocturnal and will be most active after lights-out, naturally reducing daytime encounters. Also, Zebra Spiny Eel is a known jumper, so a tight-fitting lid is essential.

Water Parameters

The safe temperature window for both species falls between 24Β°C and 26Β°C. Aim for the midpoint of this range (around 25.0Β°C) for optimal comfort.

The pH requirements of Apistogramma uaupesi (4–6) and Zebra Spiny Eel (6.8–8) do not overlap, making it impossible to satisfy both species simultaneously.

For general hardness, the shared comfort zone is 5–5 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Apistogramma uaupesi and Zebra Spiny Eel 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), 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 Apistogramma uaupesi and Zebra Spiny Eel.

Show 12 more tank sizes

Frequently Asked Questions

Can Apistogramma uaupesi and Zebra Spiny Eel live together?

No. This combination is not recommended. Key incompatibilities β€” such as critical behavioural conflicts β€” make cohabitation unsafe.

What size tank do Apistogramma uaupesi and Zebra Spiny Eel 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 uaupesi and Zebra Spiny Eel together?

Keep the aquarium between 24Β°C and 26Β°C. A target of around 25.0Β°C sits comfortably within both species' preferred ranges.

Are Apistogramma uaupesi or Zebra Spiny Eel aggressive?

Apistogramma uaupesi is moderately assertive (5/10) and Zebra Spiny Eel is peaceful (2/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Apistogramma uaupesi and Zebra Spiny Eel need?

Their pH requirements do not overlap. Apistogramma uaupesi prefers 4–6, while Zebra Spiny Eel needs 6.8–8. This makes them incompatible in the same water chemistry.

How do I manage Apistogramma uaupesi's territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Apistogramma uaupesi space to claim a territory without encroaching on the other fish's area. Adding dΓ©cor that divides the tank into distinct zones works especially well.

Does Zebra Spiny Eel being nocturnal affect compatibility?

Zebra Spiny Eel is most active after lights-out, which naturally reduces daytime encounters with its tank mate. This can actually be beneficial, as both fish get undisturbed time to feed and explore. Just ensure food reaches Zebra Spiny Eel during evening hours.


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