๐Ÿ  Fish Compatibility Guide

Can Congo Tetra and Glass Catfish Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โœ… Compatible โ€” Compatibility Score: 84/100
84/100 โ€” Compatible

Congo Tetra and Glass Catfish Compatibility Overview

Congo Tetra and Glass Catfish 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 Congo Tetra and Glass Catfish
FactorCongo TetraGlass CatfishVerdict
Temperature73โ€“82ยฐF68โ€“79ยฐFโœ… 73โ€“79ยฐF
pH Range6.0โ€“7.54.0โ€“7.0โœ… 6.0โ€“7.0
Temperamentpeacefulpeacefulโœ… Compatible
Adult Size3.1 in2.6 inโœ… Similar
Min. Group6+6+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

Congo Tetra โ€” Phenacogrammus interruptus

Congo Tetra and Glass Catfish compatibility โ€” Congo Tetra

The Congo Tetra is a vibrant and active fish that thrives in a well-maintained freshwater aquarium. With its striking coloration and peaceful nature, it's a great addition to any community tank. This species is best kept in groups and requires a spacious tank with plenty of swimming space.

โ†’ Full Congo Tetra care guide

Glass Catfish โ€” Kryptopterus vitreolus

Congo Tetra and Glass Catfish compatibility โ€” Glass Catfish

The Glass Catfish, Kryptopterus vitreolus, is a popular freshwater aquarium fish known for its unique, translucent body and iridescent scales. It is a peaceful species that thrives in groups and is suitable for beginners due to its hardy nature. These catfish are bottom-dwellers and require a well-decorated tank with plenty of swimming space.

โ†’ Full Glass Catfish care guide

Frequently Asked Questions

Can Congo Tetra live with Glass Catfish?

Yes, in a well-planned setup. Congo Tetra and Glass Catfish 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 Congo Tetra and Glass Catfish together?

A minimum of 55 gallons is recommended for keeping Congo Tetra and Glass Catfish together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Congo Tetra and Glass Catfish?

73โ€“79ยฐF โ€” inside Congo Tetra's 73โ€“82ยฐF and Glass Catfish's 68โ€“79ยฐF.

Is a Congo Tetra aggressive toward a Glass Catfish?

Congo Tetra is peaceful and Glass Catfish is peaceful. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Congo Tetra and Glass Catfish

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.