? Can arowana bite goldfish. When the tank is short of space or food, they are likely to attack other small fish. Goldfish are not particularly large, so they are also one of their targets. When they fight, they like to form cliques, and when they identify the target, they will pursue the target until they kill the target fish. If you want to avoid this, it's best not to keep them with fish that are too small. Moreover, when some wounds are found on the fish in the tank, they should be separated in time.
? Manlongyu can't be mixed with goldfish. First of all, the optimum temperature of their life is different. The optimum water temperature of Manong fish is 22-24 ℃, while the optimum water temperature of goldfish is about 18 ℃. One of them is a tropical fish, the other is a cold-water fish, and their living environment is quite different, so they are not suitable for keeping in the same tank.
In addition, the dragon fish is ferocious and likes to bite fish that are weaker than itself. The constitution of goldfish is weak, if forced to mix together, it may occur that the goldfish chases or bites the goldfish, which will not only make the goldfish nervous all the time, but also may cause them to be injured, and even lead to the death of the goldfish in serious cases.