๐Ÿ  Fish Compatibility Guide

Can Guppy and Weather Loach Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โš ๏ธ Use Caution โ€” Compatibility Score: 71/100
71/100 โ€” Use Caution

Guppy and Weather Loach Compatibility Overview

Guppy and Weather Loach can potentially coexist, but the combination requires careful attention. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.

Compatibility factors for Guppy and Weather Loach
FactorGuppyWeather LoachVerdict
Temperature72โ€“82ยฐF50โ€“77ยฐFโœ… 72โ€“77ยฐF
pH Range6.8โ€“8.56.0โ€“8.0โœ… 6.8โ€“8.0
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size2.5 in11.0 inโŒ 4ร— difference
Min. Group3+3+See below
Min. Tank Size100 gallons (for both species)โ€”

Compatibility Positives

A stable shared temperature range is available.
Temperament risk is relatively low when normal group sizes are maintained.

Caution Points

Their pH ranges overlap only partly, so aim for the shared band and keep it steady.

Species Profiles

Guppy โ€” Poecilia reticulata

Guppy and Weather Loach compatibility โ€” Guppy

Hardy and colourful livebearers. Males' long flowing tails make them targets for fin-nipping species. Very prolific breeders.

โ†’ Full Guppy care guide

Weather Loach โ€” Misgurnus anguillicaudatus

Guppy and Weather Loach compatibility โ€” Weather Loach

The Weather Loach, also known as the Weather Fish, is a popular addition to freshwater aquariums due to its peaceful nature and intriguing behavior. It has a slender, eel-like body with a translucent appearance and dark spots. These loaches are active and enjoy exploring their tank, making them a moderate activity level fish.

โ†’ Full Weather Loach care guide

Frequently Asked Questions

Can Guppy live with Weather Loach?

With significant caution and a larger tank. Guppy and Weather Loach can potentially coexist, but the combination requires careful attention. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.

What tank size do I need for Guppy and Weather Loach together?

A minimum of 100 gallons is recommended for keeping Guppy and Weather Loach together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Guppy and Weather Loach?

72โ€“77ยฐF โ€” inside Guppy's 72โ€“82ยฐF and Weather Loach's 50โ€“77ยฐF.

Is a Guppy aggressive toward a Weather Loach?

Guppy is peaceful and Weather Loach is peaceful. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Guppy and Weather Loach

Use the scenario that matches the actual group sizes and temperament you plan to keep.

ScenarioTankWhen it applies
Minimum viable100 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community150 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup220 galBest when keeping larger schools or reducing territorial pressure.