Compatibility Overview
Severum Cichlid and Swordtail can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 55 gallons), dense planting, and close monitoring are essential.
| Factor | Severum Cichlid | Swordtail | Verdict |
|---|---|---|---|
| Temperature | 75–82°F | 65–80°F | ✅ 75–80°F |
| pH Range | 6.0–7.5 | 7.0–8.3 | ⚠️ 7.0–7.5 (narrow) |
| Temperament | semi | peaceful | ⚠️ Monitor |
| Adult Size | 2.4 in | 5 in | ⚠️ 2.1× difference |
| Min. Group | 1+ | 3+ | See below |
| Min. Tank Size | 55 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Severum Cichlid — Aquarium species
The Severum Cichlid, known for its vibrant colors and peaceful nature, is a popular choice for freshwater aquariums. They have a lifespan of around 5 years and require a minimum tank size of 80 liters. These fish are not schooling fish but are known to be gentle and compatible with a variety of tank mates. Their tall, laterally compressed body shape makes th
→ Full Severum Cichlid care guide
Swordtail — Xiphophorus hellerii
Hardy livebearer with a distinctive elongated lower tail fin in males. Peaceful community fish that tolerate a wide temperature range.
Frequently Asked Questions
Can Severum Cichlid live with Swordtail?
With significant caution and a larger tank. Severum Cichlid and Swordtail can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 55 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Severum Cichlid and Swordtail together?
A minimum of 55 gallons is recommended for keeping Severum Cichlid and Swordtail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Severum Cichlid and Swordtail?
75–80°F
Is a Severum Cichlid aggressive toward a Swordtail?
Severum Cichlid is semi and Swordtail is peaceful. No major aggression issues are expected between these species.
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 | 71/100 |
| Ph | 38/100 |
| Temperament | 75/100 |
| Adult Size | 72/100 |
| 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 | 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. |