๐Ÿ  Fish Compatibility Guide

Can Serpae Tetra and Swordtail Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โš ๏ธ Use Caution โ€” Compatibility Score: 65/100
65/100 โ€” Use Caution

Serpae Tetra and Swordtail Compatibility Overview

Serpae Tetra and Swordtail 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 75 gallons), dense planting, and close monitoring are essential.

Compatibility factors for Serpae Tetra and Swordtail
FactorSerpae TetraSwordtailVerdict
Temperature68โ€“82ยฐF65โ€“80ยฐFโœ… 68โ€“80ยฐF
pH Range5.0โ€“7.57.0โ€“8.3โš ๏ธ 7.0โ€“7.5 (narrow)
Temperamentsemipeacefulโš ๏ธ Monitor
Adult Size1.6 in5 inโš ๏ธ 3.1ร— difference
Min. Group10+3+See below
Min. Tank Size75 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

Serpae Tetra โ€” Hyphessobrycon eques

Serpae Tetra and Swordtail compatibility โ€” Serpae Tetra

The Serpae Tetra is a popular freshwater fish known for its vibrant coloration and peaceful nature. It is well-suited for community tanks and can be a great addition to any aquarium. With its moderate activity level and easy care requirements, it is a suitable choice for beginners and experienced aquarists alike.

โ†’ Full Serpae Tetra care guide

Swordtail โ€” Xiphophorus hellerii

Serpae Tetra and Swordtail compatibility โ€” Swordtail

Hardy livebearer with a distinctive elongated lower tail fin in males. Peaceful community fish that tolerate a wide temperature range.

โ†’ Full Swordtail care guide

Frequently Asked Questions

Can Serpae Tetra live with Swordtail?

With significant caution and a larger tank. Serpae Tetra and Swordtail 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 75 gallons), dense planting, and close monitoring are essential.

What tank size do I need for Serpae Tetra and Swordtail together?

A minimum of 75 gallons is recommended for keeping Serpae Tetra and Swordtail together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Serpae Tetra and Swordtail?

68โ€“80ยฐF โ€” inside Serpae Tetra's 68โ€“82ยฐF and Swordtail's 65โ€“80ยฐF.

Is a Serpae Tetra aggressive toward a Swordtail?

Serpae Tetra is semi and Swordtail is peaceful. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Serpae Tetra and Swordtail

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.