๐Ÿ  Fish Compatibility Guide

Can Moonlight Gourami and Red Eye Tetra Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โš ๏ธ Use Caution โ€” Compatibility Score: 52/100
52/100 โ€” Use Caution

Moonlight Gourami and Red Eye Tetra Compatibility Overview

Moonlight Gourami and Red Eye Tetra can potentially coexist, but the combination requires careful attention. Their ranges meet only at 77โ€“79ยฐF, which leaves no margin for a heater drifting or a warm room. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.

Compatibility factors for Moonlight Gourami and Red Eye Tetra
FactorMoonlight GouramiRed Eye TetraVerdict
Temperature77โ€“86ยฐF72โ€“79ยฐFโš ๏ธ 77โ€“79ยฐF (narrow)
pH Range6.0โ€“7.56.0โ€“8.0โœ… 6.0โ€“7.5
Temperamentpeacefulsemiโš ๏ธ Monitor
Adult Size5.9 in2.8 inโš ๏ธ 2.1ร— difference
Min. Group1+6+See below
Min. Tank Size75 gallons (for both species)โ€”

Compatibility Positives

Their pH requirements overlap.
Temperament risk is relatively low when normal group sizes are maintained.

Caution Points

Their ranges meet only at 77โ€“79ยฐF, which leaves no margin for a heater drifting or a warm room.

Species Profiles

Moonlight Gourami โ€” Trichopodus microlepis

Moonlight Gourami and Red Eye Tetra compatibility โ€” Moonlight Gourami

The Moonlight Gourami is a beautiful freshwater fish known for its silvery blue color and red eyes. It is a peaceful community fish suitable for beginners and can thrive in a well-maintained aquarium. These fish are sensitive to water quality and require a spacious tank with plenty of swimming space.

โ†’ Full Moonlight Gourami care guide

Red Eye Tetra โ€” Moenkhausia sanctaefilomenae

Moonlight Gourami and Red Eye Tetra compatibility โ€” Red Eye Tetra

The Red Eye Tetra is a popular freshwater fish known for its vibrant red eyes and sleek, silver body. They are generally peaceful and can be kept in a community tank with other non-aggressive species. Their moderate activity level makes them suitable for a variety of aquarium setups. With proper care, they can live up to 5 years.

โ†’ Full Red Eye Tetra care guide

Frequently Asked Questions

Can Moonlight Gourami live with Red Eye Tetra?

With significant caution and a larger tank. Moonlight Gourami and Red Eye Tetra can potentially coexist, but the combination requires careful attention. Their ranges meet only at 77โ€“79ยฐF, which leaves no margin for a heater drifting or a warm room. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.

What tank size do I need for Moonlight Gourami and Red Eye Tetra together?

A minimum of 75 gallons is recommended for keeping Moonlight Gourami and Red Eye Tetra together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Moonlight Gourami and Red Eye Tetra?

77โ€“79ยฐF (narrow) โ€” inside Moonlight Gourami's 77โ€“86ยฐF and Red Eye Tetra's 72โ€“79ยฐF.

Is a Moonlight Gourami aggressive toward a Red Eye Tetra?

Moonlight Gourami is peaceful and Red Eye Tetra is semi. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Moonlight Gourami and Red Eye Tetra

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

ScenarioTankWhen it applies
Minimum viable75 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community125 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup150 galBest when keeping larger schools or reducing territorial pressure.