If you want to keep aquarium sharks you will need a large tank that is at least 3 times the length of the shark when it is fully grow and the width of the aquarium must be at least 2 times the length of the fish. This means that a 150 cm long shark will need an aquarium that is at least 450 cm long and 300 cm in width.
The tank should be shallow and offer as much surface area as possible. A round or hexagonal aquarium is to be preferred as corners might prevent the shark from swimming freely. Decorate the tank to create as much open space as possible for swimming however a few hiding places that they can hide under is appreciated. Make sure the shark can not get stuck in the hiding places.