Can Achara Catfish and Butterfly Goodeid Live Together?

Possible with Caution

Keeping Achara Catfish and Butterfly Goodeid together is possible but requires caution, though some care is needed. Provide a spacious tank of at least 1500 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Achara Catfish

Leiarius marmoratus

Butterfly Goodeid

Ameca splendens

🐠Family Group
Achara Catfish
Catfish
Butterfly Goodeid
Livebearers
Temperament
Achara Catfish
Semi-Aggressive (6/10)
Butterfly Goodeid
Semi-Aggressive (6/10)
Temperature
✓ Compatible
Achara Catfish
22–28°C
Butterfly Goodeid
20–26°C
pH Range
✓ Compatible
Achara Catfish
6–7.5
Butterfly Goodeid
7–8.5
Hardness (dGH)
✓ Compatible
Achara Catfish
4–15
Butterfly Goodeid
10–25
Water Type
✓ Compatible
Achara Catfish
Freshwater Only
Butterfly Goodeid
Freshwater Only
Flow Preference
✓ Compatible
Achara Catfish
Moderate
Butterfly Goodeid
Moderate
Min Tank Volume
Combined: 1500 L
Achara Catfish
1500 L
Butterfly Goodeid
110 L
Swimming Level
✓ Different zones
Achara Catfish
Bottom
Butterfly Goodeid
TopMiddle
🏷️Behavior Tags
Achara Catfish
Piscivore (Eats small/nano fish)NocturnalShrimp EaterFry PredatorDigger (Disturbs Substrate)
Butterfly Goodeid
Fin NipperHyperactive / Fast SwimmerPlant DestroyerAggressive to same species/look-alikes
Stocking calculator

Can your tank handle Achara Catfish and Butterfly Goodeid?

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.

Achara Catfish
Butterfly Goodeid
Test both in my tank

Behaviour & Temperament

Both Achara Catfish and Butterfly Goodeid are moderately assertive species with an aggression score of 6/10. Their matching temperaments mean neither fish is likely to dominate the other in a shared aquarium.

In terms of spatial distribution, Achara Catfish prefers the Bottom (Substrate) zone, whereas Butterfly Goodeid occupies the Top (Surface) and Middle (Open Water) zones. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

Worth noting: Achara 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: 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 26°C. Aim for the midpoint of this range (around 24.0°C) for optimal comfort.

Both fish can tolerate a pH between 7 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 10–15 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Achara Catfish and Butterfly Goodeid together, plan for an aquarium of at least 1500 litres with a minimum length of 240 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: Sand (Sifters), Smooth Gravel (Sensitive Barbels), Driftwood (Digestion/Hiding), Established Algae (Otocinclus), Plants - lighly covered. 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.

Frequently Asked Questions

Can Achara Catfish and Butterfly Goodeid live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 1500 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Achara Catfish and Butterfly Goodeid need?

A minimum of 1500 litres (tank length at least 240 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 Achara Catfish and Butterfly Goodeid together?

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

Are Achara Catfish or Butterfly Goodeid aggressive?

Achara Catfish is moderately assertive (6/10) and Butterfly Goodeid is moderately assertive (6/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Achara Catfish and Butterfly Goodeid need?

Both species overlap in the 7–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

Will Butterfly Goodeid nip Achara Catfish's fins?

Butterfly Goodeid is a known fin nipper. If Achara Catfish has long or flowing fins, there is a real risk of fin damage. Keeping Butterfly Goodeid in a larger group can help redirect nipping behaviour toward conspecifics.

Does Achara Catfish being nocturnal affect compatibility?

Achara 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 Achara Catfish during evening hours.


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