Cherry Shrimp and Pajama Cardinalfish Compatibility Overview
Cherry Shrimp and Pajama Cardinalfish 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: Cherry Shrimp wants 6.5โ8.0 and Pajama Cardinalfish wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Cherry Shrimp | Pajama Cardinalfish | Verdict |
|---|---|---|---|
| Temperature | 65โ80ยฐF | 72โ82ยฐF | โ 72โ80ยฐF |
| pH Range | 6.5โ8.0 | 8.1โ8.4 | โ No overlap |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 0.8 in | 3.5 in | โ 4ร difference |
| Min. Group | 10+ | 3+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Cherry Shrimp โ Neocaridina davidi
Bright red freshwater shrimp that are excellent algae cleaners. Very small โ at risk from any fish large enough to eat them.
โ Full Cherry Shrimp care guide
Pajama Cardinalfish โ Sphaeramia nematoptera
The Pajama Cardinalfish is a popular, beginner-friendly fish that can add a splash of color to your aquarium. They are generally peaceful and can be kept in a community tank. With moderate activity levels and a preference for undisturbed swimming spaces, they require a well-maintained water quality and a spacious tank.
Frequently Asked Questions
Can Cherry Shrimp live with Pajama Cardinalfish?
Generally not recommended. Cherry Shrimp and Pajama Cardinalfish 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: Cherry Shrimp wants 6.5โ8.0 and Pajama Cardinalfish wants 8.1โ8.4. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Cherry Shrimp and Pajama Cardinalfish together?
A minimum of 75 gallons is recommended for keeping Cherry Shrimp and Pajama Cardinalfish together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Cherry Shrimp and Pajama Cardinalfish?
72โ80ยฐF โ inside Cherry Shrimp's 65โ80ยฐF and Pajama Cardinalfish's 72โ82ยฐF.
Is a Cherry Shrimp aggressive toward a Pajama Cardinalfish?
Cherry Shrimp is peaceful and Pajama Cardinalfish is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Cherry Shrimp and Pajama Cardinalfish
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. |