Red Eye Tetra and Threadfin Rainbowfish Compatibility Overview
Red Eye Tetra and Threadfin Rainbowfish can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Red Eye Tetra is semi and Threadfin Rainbowfish is peaceful, so give them room and cover rather than assuming they will ignore each other. A minimum 20-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Red Eye Tetra | Threadfin Rainbowfish | Verdict |
|---|---|---|---|
| Temperature | 72โ79ยฐF | 72โ86ยฐF | โ 72โ79ยฐF |
| pH Range | 6.0โ8.0 | 5.0โ8.0 | โ 6.0โ8.0 |
| Temperament | semi | peaceful | โ ๏ธ Monitor |
| Adult Size | 2.8 in | 1.6 in | โ Similar |
| Min. Group | 6+ | 6+ | See below |
| Min. Tank Size | 20 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Red Eye Tetra โ Moenkhausia sanctaefilomenae
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
Threadfin Rainbowfish โ Iriatherina werneri
The Threadfin Rainbowfish is a popular choice for freshwater aquariums due to its vibrant colors and peaceful nature. It requires a well-maintained tank with plenty of swimming space and a moderate water flow. These fish are not known to be aggressive and can be kept in community tanks with other peaceful species.
Frequently Asked Questions
Can Red Eye Tetra live with Threadfin Rainbowfish?
Yes, in a well-planned setup. Red Eye Tetra and Threadfin Rainbowfish can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Red Eye Tetra is semi and Threadfin Rainbowfish is peaceful, so give them room and cover rather than assuming they will ignore each other. A minimum 20-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Red Eye Tetra and Threadfin Rainbowfish together?
A minimum of 20 gallons is recommended for keeping Red Eye Tetra and Threadfin Rainbowfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Red Eye Tetra and Threadfin Rainbowfish?
72โ79ยฐF โ inside Red Eye Tetra's 72โ79ยฐF and Threadfin Rainbowfish's 72โ86ยฐF.
Is a Red Eye Tetra aggressive toward a Threadfin Rainbowfish?
Red Eye Tetra is semi and Threadfin Rainbowfish is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Red Eye Tetra and Threadfin Rainbowfish
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 27 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 40 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 75 gal | Best when keeping larger schools or reducing territorial pressure. |