๐Ÿ  Fish Compatibility Guide

Can Peppered Cory and Royal Gramma Live Together?

Updated September 23, 2026 ยท FishCare AI Editorial Team

โŒ Not Compatible โ€” Compatibility Score: 0/100
0/100 โ€” Not Compatible

Peppered Cory and Royal Gramma Compatibility Overview

Peppered Cory and Royal Gramma are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Peppered Cory wants 6.0โ€“7.0 and Royal Gramma wants 8.1โ€“8.4. Review the behavior and water details before deciding whether to attempt the pairing.

Compatibility factors for Peppered Cory and Royal Gramma
FactorPeppered CoryRoyal GrammaVerdict
Temperature72โ€“79ยฐF72โ€“82ยฐFโœ… 72โ€“79ยฐF
pH Range6.0โ€“7.08.1โ€“8.4โŒ No overlap
Temperamentpeacefulsemiโš ๏ธ Monitor
Adult Size2.8 in3.0 inโœ… Similar
Min. Group6+1+See below
Min. Tank Size20 gallons (for both species)โ€”

Compatibility Positives

A stable shared temperature range is available.
Temperament risk is relatively low when normal group sizes are maintained.

Incompatibility Reasons

One of these is a marine species and the other is not; they cannot share one aquarium.
Their pH ranges do not meet: Peppered Cory wants 6.0โ€“7.0 and Royal Gramma wants 8.1โ€“8.4.

Species Profiles

Peppered Cory โ€” Corydoras paleatus

Peppered Cory and Royal Gramma compatibility โ€” Peppered Cory

The Peppered Cory is a popular freshwater fish known for its peaceful nature and unique appearance. They are suitable for beginners and can thrive in a community tank. These fish are small, reaching up to 7 cm in size, and are easily recognizable by their dark brown bodies with white spots.

โ†’ Full Peppered Cory care guide

Royal Gramma โ€” Gramma loreto

Peppered Cory and Royal Gramma compatibility โ€” Royal Gramma

The Royal Gramma, known for its vibrant blue coloration, is a popular saltwater fish among beginners and experienced aquarists alike. It requires a well-maintained tank with plenty of swimming space and a moderate current. With a peaceful temperament and a relatively easy care routine, the Royal Gramma can be a great addition to a community tank.

โ†’ Full Royal Gramma care guide

Frequently Asked Questions

Can Peppered Cory live with Royal Gramma?

Generally not recommended. Peppered Cory and Royal Gramma are generally not recommended to be housed together. One of these is a marine species and the other is not; they cannot share one aquarium. Their pH ranges do not meet: Peppered Cory wants 6.0โ€“7.0 and Royal Gramma wants 8.1โ€“8.4. Review the behavior and water details before deciding whether to attempt the pairing.

What tank size do I need for Peppered Cory and Royal Gramma together?

A minimum of 20 gallons is recommended for keeping Peppered Cory and Royal Gramma together. A larger tank improves water stability and reduces territorial conflict.

What temperature suits both Peppered Cory and Royal Gramma?

72โ€“79ยฐF โ€” inside Peppered Cory's 72โ€“79ยฐF and Royal Gramma's 72โ€“82ยฐF.

Is a Peppered Cory aggressive toward a Royal Gramma?

Peppered Cory is peaceful and Royal Gramma is semi. No major aggression issues are expected between these species.

Related Compatibility Guides

Tank Size for Peppered Cory and Royal Gramma

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

ScenarioTankWhen it applies
Minimum viable30 galOnly for the recommended minimum groups, mature filtration, and close monitoring.
Recommended community55 galAdds territory, swimming room, and a safer buffer for behavior.
Low-conflict setup75 galBest when keeping larger schools or reducing territorial pressure.