Lionfish and Silver Dollar Compatibility Overview
Lionfish and Silver Dollar 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: Lionfish wants 8.1โ8.4 and Silver Dollar wants 6.0โ7.0. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Lionfish | Silver Dollar | Verdict |
|---|---|---|---|
| Temperature | 72โ82ยฐF | 75โ82ยฐF | โ 75โ82ยฐF |
| pH Range | 8.1โ8.4 | 6.0โ7.0 | โ No overlap |
| Temperament | aggressive | peaceful | โ Risk |
| Adult Size | 15.0 in | 5.9 in | โ ๏ธ 2.5ร difference |
| Min. Group | 1+ | 5+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Lionfish โ Pterois volitans
Lionfish are popular saltwater aquarium fish known for their striking colors and intimidating spines. These fish require a large tank and careful attention to water parameters. Aggressive by nature, they can be harmful to smaller fish and invertebrates.
Silver Dollar โ Metynnis argenteus
The Metynnis argenteus, known as the Silver Dollar fish, is a popular freshwater species with a distinctive silver color and disc-shaped body. They require a spacious tank and are best kept in groups to prevent bullying. Their peaceful nature makes them suitable for community tanks, but they are not known to school.
Frequently Asked Questions
Can Lionfish live with Silver Dollar?
Generally not recommended. Lionfish and Silver Dollar 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: Lionfish wants 8.1โ8.4 and Silver Dollar wants 6.0โ7.0. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Lionfish and Silver Dollar together?
A minimum of 100 gallons is recommended for keeping Lionfish and Silver Dollar together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Lionfish and Silver Dollar?
75โ82ยฐF โ inside Lionfish's 72โ82ยฐF and Silver Dollar's 75โ82ยฐF.
Is a Lionfish aggressive toward a Silver Dollar?
Lionfish is aggressive and Silver Dollar is peaceful. Expect chasing and fin damage unless the tank is oversized, heavily planted, and watched closely.
Related Compatibility Guides
Tank Size for Lionfish and Silver Dollar
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 120 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 180 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 220 gal | Best when keeping larger schools or reducing territorial pressure. |