🐠 Fish Compatibility Guide

Can Green Terror Cichlid and Keyhole Cichlid Live Together?

Updated September 23, 2026 Β· FishCare AI Editorial Team

⚠️ Use Caution β€” Compatibility Score: 58/100
58/100 β€” Use Caution

Green Terror Cichlid and Keyhole Cichlid Compatibility Overview

Green Terror Cichlid and Keyhole Cichlid can potentially coexist, but the combination requires careful attention. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Green Terror Cichlid is aggressive and Keyhole Cichlid is peaceful. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.

Compatibility factors for Green Terror Cichlid and Keyhole Cichlid
FactorGreen Terror CichlidKeyhole CichlidVerdict
Temperature68–75Β°F70–82Β°Fβœ… 70–75Β°F
pH Range6.5–8.04.0–7.5βœ… 6.5–7.5
Temperamentaggressivepeaceful❌ Risk
Adult Size11.8 in4.3 in⚠️ 2.7Γ— difference
Min. Group1+2+See below
Min. Tank Size100 gallons (for both species)β€”

Compatibility Positives

A stable shared temperature range is available.

Caution Points

Their pH ranges overlap only partly, so aim for the shared band and keep it steady.
Green Terror Cichlid is aggressive and Keyhole Cichlid is peaceful. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely.

Species Profiles

Green Terror Cichlid β€” Andinoacara rivulatus

Green Terror Cichlid and Keyhole Cichlid compatibility β€” Green Terror Cichlid

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…

β†’ Full Green Terror Cichlid care guide

Keyhole Cichlid β€” Cleithracara maronii

Green Terror Cichlid and Keyhole Cichlid compatibility β€” Keyhole Cichlid

The Keyhole Cichlid is a popular choice for beginners due to its relatively easy care and peaceful temperament. These fish are known for their distinct keyhole marking and vibrant coloration. They do well in a community tank with other peaceful species, but should be provided with plenty of hiding spots to feel secure.

β†’ Full Keyhole Cichlid care guide

Frequently Asked Questions

Can Green Terror Cichlid live with Keyhole Cichlid?

With significant caution and a larger tank. Green Terror Cichlid and Keyhole Cichlid can potentially coexist, but the combination requires careful attention. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Green Terror Cichlid is aggressive and Keyhole Cichlid is peaceful. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely. A larger tank (minimum 100 gallons), dense planting, and close monitoring are essential.

What tank size do I need for Green Terror Cichlid and Keyhole Cichlid together?

A minimum of 100 gallons is recommended for keeping Green Terror Cichlid and Keyhole Cichlid together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Green Terror Cichlid and Keyhole Cichlid?

70–75Β°F β€” inside Green Terror Cichlid's 68–75Β°F and Keyhole Cichlid's 70–82Β°F.

Is a Green Terror Cichlid aggressive toward a Keyhole Cichlid?

Green Terror Cichlid is aggressive and Keyhole Cichlid is peaceful. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely.

Related Compatibility Guides

Tank Size for Green Terror Cichlid and Keyhole Cichlid

Use the scenario that matches the actual group sizes and temperament you plan to keep.

ScenarioTankWhen it applies
Minimum viable100 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community150 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup180 galBest when keeping larger schools or reducing territorial pressure.