Ok so Here is my story. When my nephew was 4 years old he wanted a pet so I decided to get him a betta. While we got him a very pretty betta and a 5 gallon tank to put him in. We told my nephew this was his pet to take care of which turned out to be a big mistake because he wound up feeding the poor betta peppreroni from his pizza. We did not notice that he did this until the following day when the water was all cloudy. The betta survived that but died the next day when my nephew decided to take him out of his tank and take him for a walk. Morel of the story never leave your tank unsupervised around children.