Fish Tycoon is a casual game created and developed by independent developer Last Day of Work. The game was originally only a downloadable computer game. It now has the Nintendo DS version. In the game, the player is a fish salesman who must breed and take care of fish so you can sell them and get money. The ultimate goal of the game is to breed your way to rediscover the "Seven Magic Fish of Isola." Though to do that, you have to start slow from your first fish and slowly develop your facilities of taking care of more advanced fish before you even get close.