Peaceful Community Fish:
* Harlequin Rasbora: Small, schooling fish with bright red and black markings. They are peaceful and add a splash of color.
* Neon Tetra: Another popular schooling fish with vibrant neon blue and red colors. They are active and add life to the tank.
* White Cloud Mountain Minnow: Hardy and cold-tolerant, these fish are great for beginner aquarists. They are peaceful and can tolerate a wide range of water conditions.
* Corydoras Catfish: These bottom-dwelling fish are peaceful and help to keep the tank clean by scavenging for food. They come in various colors and patterns.
* Ghost Shrimp: Peaceful and entertaining, these shrimp can be kept in groups. They are good scavengers and add a unique element to the tank.
* Snails (e.g., Nerite, Mystery Snails): Help to keep the tank clean by grazing on algae. Choose snails that are compatible with the tank size.
Important Considerations:
* Tank Size: Ensure your tank is large enough to accommodate all fish comfortably. A minimum of 20 gallons is recommended for a mixed community tank with goldfish and angelfish.
* Water Parameters: Goldfish and angelfish have different water parameter preferences. You'll need to find a happy medium that works for both.
* Temperament: While the fish listed above are generally peaceful, there can always be individual variations. Observe your fish closely and separate any that become aggressive.
* Compatibility: Research each fish species thoroughly to ensure they are compatible with your existing fish.
* Diet: Offer a varied diet to meet the dietary needs of all your fish.
Species to Avoid:
* Aggressive Fish: Avoid adding fish known for aggression, such as cichlids, barbs, or loaches. These can stress or even harm your goldfish and angelfish.
* Fish with Similar Needs: Avoid adding fish that have similar needs to your existing fish, as this can lead to competition for resources.
Important Note: Aquarium fish are living creatures, and there is always a risk of incompatibility issues. Careful observation and research are crucial for a harmonious tank environment.