🐠 Fish Compatibility Guide

Can Green Terror Cichlid and Hillstream Loach Live Together?

Updated September 23, 2026 Β· FishCare AI Editorial Team

❌ Not Compatible β€” Compatibility Score: 32/100
32/100 β€” Not Compatible

Green Terror Cichlid and Hillstream Loach Compatibility Overview

Green Terror Cichlid and Hillstream Loach are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.

Compatibility factors for Green Terror Cichlid and Hillstream Loach
FactorGreen Terror CichlidHillstream LoachVerdict
Temperature68–75Β°F68–75Β°Fβœ… 68–75Β°F
pH Range6.5–8.06.0–7.5βœ… 6.5–7.5
Temperamentaggressivepeaceful❌ Risk
Adult Size11.8 in2.6 in❌ 5Γ— difference
Min. Group1+4+See below
Min. Tank Size100 gallons (for both species)β€”

Compatibility Positives

A stable shared temperature range is available.

Incompatibility Reasons

The adult size gap creates a meaningful predation risk.
Their pH ranges overlap only partly, so aim for the shared band and keep it steady.
Green Terror Cichlid is aggressive and Hillstream Loach 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 Hillstream Loach 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

Hillstream Loach β€” Sewellia lineolata

Green Terror Cichlid and Hillstream Loach compatibility β€” Hillstream Loach

Sewellia lineolata, known as the Hillstream Loach, is a fascinating species for aquarists. These fish require a well-oxygenated, clear water environment with plenty of hiding spots. With a lifespan of 7 years, they are a long-term commitment. Their olive green color and slender body shape add a unique aesthetic to the tank.

β†’ Full Hillstream Loach care guide

Frequently Asked Questions

Can Green Terror Cichlid live with Hillstream Loach?

Generally not recommended. Green Terror Cichlid and Hillstream Loach are generally not recommended to be housed together. The adult size gap creates a meaningful predation risk. Their pH ranges overlap only partly, so aim for the shared band and keep it steady. Review the behavior and water details before deciding whether to attempt the pairing.

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

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

What temperature suits both Green Terror Cichlid and Hillstream Loach?

68–75Β°F β€” inside Green Terror Cichlid's 68–75Β°F and Hillstream Loach's 68–75Β°F.

Is a Green Terror Cichlid aggressive toward a Hillstream Loach?

The adult size gap creates a meaningful predation risk.

Related Compatibility Guides

Tank Size for Green Terror Cichlid and Hillstream Loach

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.