Visual Stimulation:
* Plants: Live or silk plants can provide hiding places and interesting textures.
* Driftwood: Creates a natural, interesting environment and can be a good place for algae to grow.
* Rocks and caves: Offer hiding spots and a change of scenery.
* Bubbles: These can be entertaining for goldfish to swim through and explore.
Interactive Stimulation:
* Floating toys: Toys that move with the current of the water can be engaging for goldfish.
* Puzzle feeders: These toys make your goldfish work for their food, which can be mentally stimulating.
Important Note: Make sure any toys you introduce are safe for your goldfish. Choose materials that won't harm them, and avoid anything that might be sharp or could trap them.
Instead of toys, focus on creating a stimulating environment for your goldfish:
* Plenty of space: A larger tank is better than a small one.
* Variety: Different plants, rocks, and other objects create a visually interesting habitat.
* Water movement: A gentle current can keep your fish active and alert.
Ultimately, it's about enriching their environment and making it enjoyable for them.