Flame Angelfish and Otocinclus Compatibility Overview
Flame Angelfish and Otocinclus are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Flame Angelfish wants 8.1โ8.4 and Otocinclus wants 6.0โ7.5. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Flame Angelfish | Otocinclus | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 72โ82ยฐF | โ 72โ82ยฐF |
| pH Range | 8.1โ8.4 | 6.0โ7.5 | โ No overlap |
| Temperament | semi | peaceful | โ ๏ธ Monitor |
| Adult Size | 4.0 in | 1.5 in | โ ๏ธ 2.7ร difference |
| Min. Group | 1+ | 4+ | See below |
| Min. Tank Size | 55 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Flame Angelfish โ Centropyge loricula
The Flame Angelfish is a popular choice for saltwater aquariums due to its vibrant coloration and peaceful nature. It requires a spacious tank with plenty of swimming space and a stable water environment. With proper care, it can thrive in a community tank with compatible species.
โ Full Flame Angelfish 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 Flame Angelfish live with Otocinclus?
Generally not recommended. Flame Angelfish and Otocinclus are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Flame Angelfish wants 8.1โ8.4 and Otocinclus wants 6.0โ7.5. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Flame Angelfish and Otocinclus together?
A minimum of 55 gallons is recommended for keeping Flame Angelfish and Otocinclus together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Flame Angelfish and Otocinclus?
72โ82ยฐF โ inside Flame Angelfish's 72โ82ยฐF and Otocinclus's 72โ82ยฐF.
Is a Flame Angelfish aggressive toward a Otocinclus?
Flame Angelfish is semi and Otocinclus is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Flame Angelfish 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. |