Compatibility Overview
Coral Beauty and Red Eye Tetra 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 | Coral Beauty | Red Eye Tetra | Verdict |
|---|---|---|---|
| Temperature | 75–81°F | 72–79°F | ✅ 75–79°F |
| pH Range | 8.0–8.3 | 6.0–7.0 | ❌ No overlap |
| Temperament | semi | aggressive | ❌ Risk |
| Adult Size | 2.4 in | 1.6 in | ✅ Similar |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 20 gallons (for both species) | — | |
✅ Compatibility Positives
❌ Incompatibility Reasons
Species Profiles
Coral Beauty — Aquarium species
The Coral Beauty Angelfish is a popular choice for reef tanks due to its vibrant colors and gentle demeanor. These fish thrive in well-maintained aquariums with plenty of swimming space and hiding spots. They are generally peaceful with other compatible fish but can be sensitive to aggressive tankmates. A diet rich in variety is essential for their health.
→ Full Coral Beauty care guide
Red Eye Tetra — Aquarium species
The Red Eye Tetra is a popular freshwater fish known for its vibrant red eyes and sleek, silver body. They are generally peaceful and can be kept in a community tank with other non-aggressive species. Their moderate activity level makes them suitable for a variety of aquarium setups. With proper care, they can live up to 5 years.
Frequently Asked Questions
Can Coral Beauty live with Red Eye Tetra?
Generally not recommended. Coral Beauty and Red Eye Tetra 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 Coral Beauty and Red Eye Tetra together?
A minimum of 20 gallons is recommended for keeping Coral Beauty and Red Eye Tetra together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Coral Beauty and Red Eye Tetra?
75–79°F
Is a Coral Beauty aggressive toward a Red Eye Tetra?
Coral Beauty is semi and Red Eye Tetra is aggressive. These animals require different water types and cannot share one aquarium.
Related Compatibility Guides
Compatibility score breakdown
The overall score is weighted across water chemistry, behavior, adult size, swimming zone, and social needs. A score is a planning aid—not a guarantee for individual fish.
| Factor | Score |
|---|---|
| Temperature | 67/100 |
| Ph | 0/100 |
| Temperament | 25/100 |
| Adult Size | 100/100 |
| Swim Zone | 68/100 |
| Social Needs | 92/100 |
Tank size scenarios
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 24 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 40 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 55 gal | Best when keeping larger schools or reducing territorial pressure. |