Luohan fish and silver arowana can not be mixed. The main reason is that Luohan fish and silver arowana are both ferocious fish, and when they are raised together, they will fight. If the Luohan fish is too big, it will bite the silver arowana. If the silver arowana is bigger, it will use the Luohan fish as food. If you really want to mix culture, then choose Luohan fish and silver arowana with similar size to mix culture.
Polyculture should choose transparent fish tanks, so that they can observe the state of getting along with each other, and when they fight, they can be fished out in time. They can be polycultured mainly because their living environment is not very different, and they have a suitable cross temperature and cross PH for survival. But it's better not to mix.
Luohan fish is omnivorous fish, generally eat anything. In daily feeding, they can be fed with synthetic feed, live bait and frozen bait. The low temperature environment can kill the bacteria on the live bait, and it is safer to feed them with frozen bait. Silver arowana is a carnivorous fish, and they are more particular about food. They like to eat live bait such as small fish, shrimps and mealworms. Live bait is rich in protein, sugar, fat and other nutrients, and tastes good. It is one of the main foods for feeding silver arowana.