๐Ÿ  Fish Compatibility Guide

Can Clown Pleco and Swordtail Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 88/100
88/100 โ€” Compatible

Clown Pleco and Swordtail Compatibility Overview

Clown Pleco and Swordtail can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, and neither poses a major aggression risk to the other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.

Compatibility factors for Clown Pleco and Swordtail
FactorClown PlecoSwordtailVerdict
Temperature73โ€“82ยฐF65โ€“80ยฐFโœ… 73โ€“80ยฐF
pH Range6.5โ€“7.87.0โ€“8.3โš ๏ธ 7.0โ€“7.8 (narrow)
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size3.5 in5 inโœ… Similar
Min. Group1+3+See below
Min. Tank Size55 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

Clown Pleco โ€” Panaqolus maccus

Clown Pleco and Swordtail compatibility โ€” Clown Pleco

The Clown Pleco is a popular freshwater fish known for its dark brown body with light spots and long, flattened body shape. They are peaceful and make great community fish for beginners. These plecos are moderate in activity level and prefer a tank with plenty of hiding spots.

โ†’ Full Clown Pleco care guide

Swordtail โ€” Xiphophorus hellerii

Clown Pleco 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 Clown Pleco live with Swordtail?

Yes, in a well-planned setup. Clown Pleco and Swordtail can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges. Both species are peaceful, and neither poses a major aggression risk to the other. A minimum 55-gallon tank is recommended to provide adequate territory and water volume for both species.

What tank size do I need for Clown Pleco and Swordtail together?

A minimum of 55 gallons is recommended for keeping Clown Pleco and Swordtail together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Clown Pleco and Swordtail?

73โ€“80ยฐF โ€” inside Clown Pleco's 73โ€“82ยฐF and Swordtail's 65โ€“80ยฐF.

Is a Clown Pleco aggressive toward a Swordtail?

Clown Pleco is peaceful and Swordtail is peaceful. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Clown Pleco and Swordtail

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

ScenarioTankWhen it applies
Minimum viable55 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community75 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup125 galBest when keeping larger schools or reducing territorial pressure.