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.