Can Pictus Catfish and Two-spot Apistogramma Live Together?

Possible with Caution

Keeping Pictus Catfish and Two-spot Apistogramma together is possible but requires caution, though some care is needed. Provide a spacious tank of at least 200 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Pictus Catfish

Pimelodus pictus

Two-spot Apistogramma

Apistogramma rupununi

🐠Family Group
Pictus Catfish
Catfish
Two-spot Apistogramma
Cichlids - South American
Temperament
Pictus Catfish
Mostly Peaceful (4/10)
Two-spot Apistogramma
Semi-Aggressive (5/10)
Temperature
βœ“ Compatible
Pictus Catfish
22–26Β°C
Two-spot Apistogramma
22–30Β°C
pH Range
βœ“ Compatible
Pictus Catfish
6–7.5
Two-spot Apistogramma
5–7
Hardness (dGH)
βœ“ Compatible
Pictus Catfish
3–15
Two-spot Apistogramma
1–10
Water Type
βœ“ Compatible
Pictus Catfish
Freshwater Only
Two-spot Apistogramma
Freshwater Only
Flow Preference
βœ“ Compatible
Pictus Catfish
Moderate
Two-spot Apistogramma
Low
Min Tank Volume
Combined: 200 L
Pictus Catfish
200 L
Two-spot Apistogramma
60 L
Swimming Level
Shared: 1 zone
Pictus Catfish
MiddleBottom
Two-spot Apistogramma
Bottom
🏷️Behavior Tags
Pictus Catfish
Piscivore (Eats small/nano fish)Shrimp EaterHyperactive / Fast SwimmerNocturnal
Two-spot Apistogramma
Territorial (Defends specific area)Fry PredatorAggressive to same species/look-alikes
Stocking calculator

Can your tank handle Pictus Catfish 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.

Pictus Catfish
Two-spot Apistogramma
Test both in my tank

Behaviour & Temperament

Pictus Catfish 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 Pictus Catfish.

Pictus Catfish 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.

Worth noting: Pictus Catfish is nocturnal and will be most active after lights-out, naturally reducing daytime encounters.

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 Pictus Catfish 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.

Water Parameters

The safe temperature window for both species falls between 22Β°C and 26Β°C. Aim for the midpoint of this range (around 24.0Β°C) for optimal comfort.

Both fish can tolerate a pH between 6 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 3–10 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Pictus Catfish and Two-spot Apistogramma together, plan for an aquarium of at least 200 litres with a minimum length of 120 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 β€” caves, driftwood, and dense plant clusters β€” so the less dominant fish can retreat when needed.

Specific environmental needs for this combination include: Sand (Sifters), Smooth Gravel (Sensitive Barbels), 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 Pictus Catfish and Two-spot Apistogramma.

Show 5 more tank sizes

Frequently Asked Questions

Can Pictus Catfish and Two-spot Apistogramma live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 200 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Pictus Catfish and Two-spot Apistogramma need?

A minimum of 200 litres (tank length at least 120 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 Pictus Catfish and Two-spot Apistogramma together?

Keep the aquarium between 22Β°C and 26Β°C. A target of around 24.0Β°C sits comfortably within both species' preferred ranges.

Are Pictus Catfish or Two-spot Apistogramma aggressive?

Pictus Catfish 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 Pictus Catfish and Two-spot Apistogramma need?

Both species overlap in the 6–7 pH range. Consistency is key β€” avoid sudden swings, and test regularly to stay within this window.

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 dΓ©cor that divides the tank into distinct zones works especially well.

Does Pictus Catfish being nocturnal affect compatibility?

Pictus Catfish 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 Pictus Catfish during evening hours.


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