Compatibility Overview
Clown Pleco and Green Terror Cichlid 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 75 gallons), dense planting, and close monitoring are essential.
| Factor | Clown Pleco | Green Terror Cichlid | Verdict |
|---|---|---|---|
| Temperature | 72–79°F | 72–82°F | ✅ 72–79°F |
| pH Range | 6.0–7.0 | 6.0–8.0 | ✅ 6.0–7.0 |
| Temperament | semi | aggressive | ❌ Risk |
| Adult Size | 7.9 in | 3.9 in | ⚠️ 2.0× difference |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 75 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Clown Pleco — Aquarium species
The Clown Pleco is a popular freshwater fish known for its dark brown body with light spots and long, flattened body shape. They are peaceful and make great community fish for beginners. These plecos are moderate in activity level and prefer a tank with plenty of hiding spots.
Green Terror Cichlid — Aquarium species
The Green Terror Cichlid is a popular choice for experienced aquarists due to its striking appearance and vibrant colors. They are known for their aggression and should be kept in a species-specific tank. Their tall, laterally compressed bodies and vivid coloration make them visually appealing but require careful handling due to their potentially aggressive
Frequently Asked Questions
Can Clown Pleco live with Green Terror Cichlid?
With significant caution and a larger tank. Clown Pleco and Green Terror Cichlid 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 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Clown Pleco and Green Terror Cichlid together?
A minimum of 75 gallons is recommended for keeping Clown Pleco and Green Terror Cichlid together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Clown Pleco and Green Terror Cichlid?
72–79°F
Is a Clown Pleco aggressive toward a Green Terror Cichlid?
Clown Pleco is semi and Green Terror Cichlid is aggressive. 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 | 100/100 |
| Ph | 100/100 |
| Temperament | 25/100 |
| Adult Size | 72/100 |
| Swim Zone | 92/100 |
| 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 | 75 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 125 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 150 gal | Best when keeping larger schools or reducing territorial pressure. |