Compatibility Overview
Oscar and Tiger Barb are generally not recommended to be housed together. The issues listed above — whether water parameter incompatibility, predation risk, or aggression — create conditions where one or both fish are likely to suffer harm or chronic stress.
| Factor | Oscar | Tiger Barb | Verdict |
|---|---|---|---|
| Temperature | 74–81°F | 68–79°F | ✅ 74–79°F |
| pH Range | 6.0–8.0 | 6.0–8.0 | ✅ 6.0–8.0 |
| Temperament | aggressive | semi | ❌ Risk |
| Adult Size | 14 in | 2.75 in | ❌ 5× difference |
| Min. Group | 1+ | 6+ | See below |
| Min. Tank Size | 100 gallons (for both species) | — | |
✅ Compatibility Positives
❌ Incompatibility Reasons
Species Profiles
Oscar — Astronotus ocellatus
Intelligent but aggressive cichlids that will eat any fish small enough to fit in their mouth. Require large tanks (75+ gallons) and robust tank mates.
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 Oscar live with Tiger Barb?
Generally not recommended. Oscar and Tiger Barb are generally not recommended to be housed together. The issues listed above — whether water parameter incompatibility, predation risk, or aggression — create conditions where one or both fish are likely to suffer harm or chronic stress.
What tank size do I need for Oscar and Tiger Barb together?
A minimum of 100 gallons is recommended for keeping Oscar and Tiger Barb together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Oscar and Tiger Barb?
74–79°F
Is a Oscar aggressive toward a Tiger Barb?
Oscar is aggressive and Tiger Barb is semi. Narrow temperature overlap (74–79°F) — keeping the tank at exactly 75–78°F is needed for both species.