In this case, the arowana is already picky about food and is accustomed to eating barley worms and not other meat. The breeder can use the method of starving to change the diet of the arowana. Feed shrimps into the tank twice a day, take them out when the arowana doesn't eat, then feed them again, and take them out again when they don't eat. Repeat this action until the arowana eats. Arowana often eating barley worms is harmful to the body and can cause indigestion, easy anal prolapse and other diseases.