Vietnamese farm breeds Siamese fighting fish in thousands of tiny bottles

This farm in Hanoi breeds Siamese fighting fish in thousands of tiny bottles.

Tran Ngoc Thang has been breeding the Siamese fighting fish, also know as betta, for over 20 years.

This farm in Hanoi breeds Siamese fighting fish in thousands of tiny bottles.

Tran Ngoc Thang has been breeding the Siamese fighting fish, also know as betta, for over 20 years.

The farmer squeezes the fish into the small, discarded bottles.

The fish cannot be kept together as they will fight.

Thang sells the fish for prices ranging from $4 to $10 USD, depending on their colour and rarity.

He raises around 5,000 betta fish each year.

This footage was filmed on April 22.