Congo Tetra and Otocinclus Compatibility Overview
Congo Tetra and Otocinclus 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.
| Factor | Congo Tetra | Otocinclus | Verdict |
|---|---|---|---|
| Temperature | 73โ82ยฐF | 72โ82ยฐF | โ 73โ82ยฐF |
| pH Range | 6.0โ7.5 | 6.0โ7.5 | โ 6.0โ7.5 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 3.1 in | 1.5 in | โ ๏ธ 2.1ร difference |
| Min. Group | 6+ | 4+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Congo Tetra โ Phenacogrammus interruptus
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
Otocinclus โ Otocinclus spp.
Tiny algae-eating catfish that are peaceful with all species. Need established algae growth and biofilm; sensitive to ammonia.
Frequently Asked Questions
Can Congo Tetra live with Otocinclus?
Yes, in a well-planned setup. Congo Tetra and Otocinclus 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 Otocinclus together?
A minimum of 55 gallons is recommended for keeping Congo Tetra and Otocinclus together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Congo Tetra and Otocinclus?
73โ82ยฐF โ inside Congo Tetra's 73โ82ยฐF and Otocinclus's 72โ82ยฐF.
Is a Congo Tetra aggressive toward a Otocinclus?
Congo Tetra is peaceful and Otocinclus is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Congo Tetra and Otocinclus
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 55 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 75 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 125 gal | Best when keeping larger schools or reducing territorial pressure. |