Established in 1994, the ESRB is an independent organization responsible for reviewing and rating video games for content. Every game that appears on a Nintendo system is rated by the ESRB. Leading members of Congress, child advocacy groups, retailers, and developers have all given praise to the ESRB rating system. The ESRB uses highly-trained raters, from all walks of life, to review games and determine what a game's rating will be. The raters are not affiliated with any company or publisher in the video game industry. The ESRB has a website at www.esrb.org. The website offers information on individual games and provides general information on game content descriptors and game ratings.
Fish Tycoon has received an E for Everyone rating.

Established in 1978, Parents’ Choice is the nation's oldest nonprofit guide to quality children's media and toys. The Foundation's mission is to provide parents with information to participate wisely in their children's learning outside the classroom. The Foundation’s purpose is to search out and recommend products that help kids grow – imaginatively, physically, morally and mentally—fairly priced products that are fun, safe and socially sound. You can find more information at www.parents-choice.org.