Only goldfish that have been raised for a long time can know their owners. Like the goldfish just bought back, it is very strange to everything, let alone know the owner. In addition, the fish know the owner, mainly through the voice and action to produce conditioned reflex. This kind of conditioned reflex needs long-term and regular feeding to form. If the feeding time is not fixed, how long the fish will not know the owner. When the owner passes by the fish tank, the fish suddenly speeds up its swimming speed and even makes a rolling action. That means he knows his master. Because these actions show that the fish is very happy, and suddenly make these actions, that it is aware of the owner.
Goldfish can interact with their owners. Because goldfish can't talk, it can only stay in the fish tank. Therefore, its interaction with its owner can only be limited to simple conditioned reflex. For example, at feeding time, when the owner comes to the front of the fish tank, the fish will express its joy by swimming quickly and twisting its body. If the owner plays with the fish in the water with his hands when he is young. When it grows up or for a long time, the owner will stretch out his hand, and the fish will come to play with him. These are all manifestations of the interaction between fish and their owners.
