This game serves well as a teaser to aquarium fishkeeping. Its Realistic mode requires you to check in on your fishes regularly: feed them, clean the tanks, and swap filters at intervals.
The Campaign presents a good look into those from varying walks of life who wanted aquariums for one reason or another, and problems that could occur from those differing motivations and commitment. The problems presented range from people seeing the aquarium and its fishes as mere decor, fulfilling something external, to just plain bad timing in life. The challenge is balancing the fishes' need with the human want.