Best Choices:
* Other Comets: The most obvious choice! Comets are generally peaceful and enjoy the company of their own kind.
* Fantail Goldfish: Similar temperament to comets, with graceful fins.
* Common Goldfish: These are hardy and easy to care for, also usually peaceful.
* Shubunkin Goldfish: Known for their vibrant colors and peaceful nature.
* Oranda Goldfish: Can be a bit more boisterous, but generally compatible if you get a calmer individual.
* Black Moor Goldfish: Similar to orandas, choose one that is calm and peaceful.
Things to Consider:
* Size: The most important factor is that all fish have enough space. Comets can grow quite large, so aim for a tank of at least 55 gallons.
* Temperament: Even within species, individual fish can have varying personalities. Observe your comet's behavior to see if it is more active or shy.
* Finnage: Avoid fish with very long or delicate fins, as comets can be clumsy and may accidentally damage them.
Not Recommended:
* Aggressive Fish: Avoid any fish known for being aggressive, such as cichlids, bettas, or some types of barbs.
* Fast-Moving Fish: Comets are relatively slow-moving, so fast-moving fish may stress them.
Important Considerations:
* Tank Setup: A well-planted tank with hiding spots will give your fish a sense of security and reduce the chance of aggression.
* Water Quality: Maintaining excellent water quality is crucial for all goldfish, which are more sensitive to ammonia and nitrates than many other fish.
* Feeding: Provide a balanced diet with a variety of high-quality foods.
* Observe Carefully: Always monitor your fish for any signs of aggression or stress.
Remember: Every fish is an individual, so even within the "recommended" categories, some fish may not be compatible. Observe your comet's behavior and choose compatible tank mates accordingly.