Hi I have a 1.5 gSolomon tank and it's called a "goldfish" tank so can I really put a goldfish in it cause the petsmart people say goldfish need like a 23 gallon tank.. If I do get a goldfish it would be a small one. So does anyone have any ideas for any other kinds of fish... like is there another breed that's better? and I need to know by 12:30 this afternoon!!!