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1. Interaction with Decorations

• Entering and exiting decorations such as caves, plants, or pipes can be considered a form of play.

• Some fish move as if playing with their own reflections or with air bubbles.

• Continuously swimming around and following the same decoration may also be a sign of exploration and play.

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2. Social Interaction and Following Behavior

• In species that live in groups, behaviors such as following a leader and swimming together are indicators of interaction.

• Mutual swimming or short chases with another fish may be playful (as long as there is no aggression).

• Young fish and energetic species in particular tend to show more interaction.

3. Response and Play with Owners

• Swimming toward their owner when they approach the glass or following a finger is commonly observed.

• Some species, such as bettas, oscars, and goldfish, can form higher levels of interaction with humans.

• In fish that are hand-fed, this interaction becomes even stronger.

4. Play Objects for Fish

• Tunnel pipes they can swim through and decorations that move with the water flow stimulate the fish.

• Floating food rings and lighted air stones can also serve as play elements.

• Regular interaction with such objects helps reduce stress in fish.

5. Benefits of Interaction

• Fish become more active and energetic.

• Behavioral problems caused by boredom and stress decrease.

• They get the chance to display natural behaviors.

• Healthy growth and brighter colors are promoted.

Conclusion
Aquarium fish can also interact with their environment and display play-like behaviors. These actions show that they are fit, healthy, and happy. Enriching the aquarium environment and providing suitable conditions for social fish will enhance the well-being of the fish as well as the enjoyment of those watching them.