Compatibility Overview
Otocinclus and Tiger Barb can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 40-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Otocinclus | Tiger Barb | Verdict |
|---|---|---|---|
| Temperature | 72–82°F | 68–79°F | ✅ 72–79°F |
| pH Range | 6.0–7.5 | 6.0–8.0 | ✅ 6.0–7.5 |
| Temperament | peaceful | semi | ⚠️ Monitor |
| Adult Size | 1.5 in | 2.75 in | ✅ Similar |
| Min. Group | 4+ | 6+ | See below |
| Min. Tank Size | 40 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Otocinclus — Otocinclus spp.
Tiny algae-eating catfish that are peaceful with all species. Need established algae growth and biofilm; sensitive to ammonia.
Tiger Barb — Puntigrus tetrazona
Striking striped barbs that are notorious fin-nippers. Must be kept in groups of 6+ to redirect aggression within the school. Incompatible with long-finned fish.
Frequently Asked Questions
Can Otocinclus live with Tiger Barb?
Yes, in a well-planned setup. Otocinclus and Tiger Barb can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 40-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Otocinclus and Tiger Barb together?
A minimum of 40 gallons is recommended for keeping Otocinclus and Tiger Barb together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Otocinclus and Tiger Barb?
72–79°F
Is a Otocinclus aggressive toward a Tiger Barb?
Otocinclus is peaceful and Tiger Barb is semi. Minor aggression possible from the semi-aggressive species; provide hiding spots.