Can Lyretail Killifish live with White Cloud Minnow?

These two species are usually compatible in community tanks.

Why Lyretail Killifish and White Cloud Minnow Work

These two species overlap in both temperature (72–75°F overlap) and pH (6.0-7.0 overlap range). Their temperature tolerances are close enough, and neither fish pushes the pH so far outside the other's comfort zone that it creates chronic stress. The temperament match (peaceful + peaceful) is low-conflict. In a 10+ gallon tank with adequate hiding spots, these two can coexist with minimal problems.

Temperament Match: peaceful + peaceful. Both peaceful → minimal conflict.

Score: 80.0/100 (GOOD ≥80, CAUTION ≥50, RISKY <50).

🔧 Tank Setup Requirements (for Both)

• Minimum tank: 10 gallons — sized for the larger fish in the pair.
• Temperature: keep it between 72°F and 75°F.
• pH: maintain 6.0 – 7.0.
• Hiding spots: essential for Lyretail Killifish — caves, plants, or driftwood to retreat when feeling stressed.
• Water changes: 25% weekly minimum. Two species mean double the bioload.

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Recommended Equipment

Based on tank size 10+ gallons:

Explore Related Checks

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⚠️ Common Reasons This Pairing Fails in Practice

• Narrow temperature margin: Only 3°F of overlap means a stuck heater or seasonal temperature swing can push one species out of its comfort zone.
• Overcrowding: Even compatible species fail in tanks that are too small. Double the species means double the bioload — 25% weekly water changes are the minimum.
• Inadequate acclimation: Adding both species on the same day without quarantine is a common mistake. Always drip-acclimate new arrivals and quarantine for 2–4 weeks.
• Mismatched feeding: Lyretail Killifish is a carnivore while White Cloud Minnow is a omnivore. Use targeted feeding zones and sinking vs. floating food to ensure both get proper nutrition.

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