Clown Loach and Otocinclus Compatibility Overview
Clown Loach and Otocinclus are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Clown Loach | Otocinclus | Verdict |
|---|---|---|---|
| Temperature | 77โ86ยฐF | 72โ82ยฐF | โ 77โ82ยฐF |
| pH Range | 6.0โ7.5 | 6.0โ7.5 | โ 6.0โ7.5 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 12 in | 1.5 in | โ 8ร difference |
| Min. Group | 5+ | 4+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Clown Loach โ Chromobotia macracanthus
Striking striped loach that grows very large. Peaceful with fish but will eat shrimp, snails and tiny fish.
โ Full Clown Loach 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 Clown Loach live with Otocinclus?
Generally not recommended. Clown Loach and Otocinclus are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Clown Loach and Otocinclus together?
A minimum of 100 gallons is recommended for keeping Clown Loach and Otocinclus together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Clown Loach and Otocinclus?
77โ82ยฐF โ inside Clown Loach's 77โ86ยฐF and Otocinclus's 72โ82ยฐF.
Is a Clown Loach aggressive toward a Otocinclus?
The adult size gap creates a meaningful predation risk.
Related Compatibility Guides
Tank Size for Clown Loach and Otocinclus
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 100 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 150 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 220 gal | Best when keeping larger schools or reducing territorial pressure. |