Rosy Barb and Siamese Algae Eater Compatibility
Rosy Barb and Siamese Algae Eater make a good match: temperature ranges overlap at 72–77°F, water chemistry aligns, and neither presents a meaningful behavioural or size risk. Plan on at least 30 gallons. Individual fish vary — observe behaviour during introduction.
Rosy Barb vs Siamese Algae Eater at a glance
| Aspect | Rosy Barb | Siamese Algae Eater |
|---|---|---|
| Adult size | ~4 in | ~6 in |
| Minimum tank | 30 gal | 30 gal |
| Temperature | 65–77°F | 72–82°F |
| pH | 6–7.5 | 6.5–7.5 |
| Temperament | peaceful | peaceful |
| Swimming zone | middle | bottom |
| Group size | 6+ | singly OK |
| Care level | easy | moderate |
Overlap in temperature: 72–77°F. Overlap in pH: 6.5–7.5.
Why this verdict
- Temperature: Shared range of 72–77°F.
- Water parameters: Shared pH range of 6.5–7.5.
- Temperament: Both species are peaceful community fish.
- Adult size: Comparable adult sizes (~4" and ~6").
- Swimming zone: Complementary layers (middle + bottom) reduce competition for space.
- Schooling: Group sizes matter: Rosy Barb: keep at least 6.
- Tank size: Plan for at least 30 gallons to satisfy both species.
Main risks
No standout risks — a peaceful pairing that works in a settled community tank.
Recommended tank
Plan on 30 gallons or larger for this pair. Suitable sizes: 30 gallon, 40 gallon Breeder, 40 gallon Long.
Group sizes: Rosy Barb: keep at least 6.
Sources
- FishBase — Scientific Database · Primary / scientific · https://www.fishbase.se/
- SeriouslyFish — Specialist Publication · High authority · https://www.seriouslyfish.com/
- Aquarium Forge editorial guidelines — Editorial Interpretation · Editorial interpretation
- FishBase — Scientific Database · Primary / scientific · https://www.fishbase.se/
- SeriouslyFish — Specialist Publication · High authority · https://www.seriouslyfish.com/
- Practical Fishkeeping — Specialist Publication · Moderate authority · https://www.practicalfishkeeping.co.uk/
- Aquarium Forge editorial guidelines — Editorial Interpretation · Editorial interpretation
- Aquarium Forge editorial guidelines — Editorial Interpretation · Editorial interpretation
Compatibility verdicts are planning guidance, not guarantees — individual fish vary. Rule version 1.1 · Data reviewed: .
Frequently asked questions
Can Rosy Barb and Siamese Algae Eater live together?
Our verdict is “Good Match”. Rosy Barb and Siamese Algae Eater make a good match: temperature ranges overlap at 72–77°F, water chemistry aligns, and neither presents a meaningful behavioural or size risk. Plan on at least 30 gallons. Individual fish vary — observe behaviour during introduction.
What tank size do Rosy Barb and Siamese Algae Eater need?
Plan for at least 30 gallons so both species have their minimum space — Rosy Barb needs 30+ gal and Siamese Algae Eater needs 30+ gal. Adding length and cover reduces stress further.
What temperature do Rosy Barb and Siamese Algae Eater share?
Their comfortable ranges overlap at 72–77°F. Hold the tank near the middle of that band and avoid the extremes of either species' range.
What are the main risks keeping Rosy Barb with Siamese Algae Eater?
There are no standout behavioural or size risks — the usual care and a settled, well-filtered tank is enough.
How many Rosy Barb and Siamese Algae Eater should I keep?
Rosy Barb: keep at least 6. Group sizes matter for shoaling fish — too few and they become stressed and nippy.
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