1, arowana jumping out of the tank is an instinctive behavior. It likes to swim in the upper layer of water, and it can jump out of the water to prey with strong explosive force, especially when there are many mosquitoes in summer, so it is better to cover it above the fish tank.
2. In addition to instinct, arowana may also have poor water quality and not change water for a long time, resulting in uncomfortable growth. It may also be frightened, and sudden fright will also cause arowana to jump.