They are very hardy and interesting fish and can be kept in an aquarium. They can grow up 18 inches though and will require a large aquarium. I would suggest at least a 55 gallon aquarium. They will eat smaller fish, so be careful when choosing tankmates.
You could try to but chances are it would not survive due to the large amount of swimming space needed and the brackish type setup. It would be easier and cheaper to fill it with standard freshwater fish that way you have the food readily available. To keep a fish of this size you would need roughly 500 gallons.