Video captured the moment of The fish attacked the mirror because it saw its shadow in the mirror in Ho Chi Minh City, Vietnam.
The man said he had just bought the fish and put it in the aquarium. This is a type of Flower Horn fish. The fishmonger said the fish would not share the tank with any fish, it would attack other fish. The man was very curious about this fish and he decided to buy it.
He was afraid the fish would be lonely when alone so he put a mirror in the aquarium so the fish could look in the mirror and feel not alone. However, he was surprised when he placed the mirror on the fish that attacked the mirror thinking that there was another fish in the mirror.
The man then moved the mirror out of the aquarium and he said he only put the mirror in the aquarium for a few minutes a day. This is the most ferocious fish he has ever kept.