Arowanas and other similar large fishes are freshwater bony fish with elongated bodies with large, heavy scales. These carnivore fishes are a large point of attraction for aquarium keepers. Known for their aggressive behavior and personality, these large fishes can often be troublesome to keep and care for. Arowanas, also known as dragon fish is the most widely sought-after monster fish in India, not just for how beautiful they look, but also for the positive energies that they are said to bring in.