Someone - all those fish have been kept by people here. They are not compatible with one another and each has different diet and space needs. If you want a tank, read all kinds of books. Then you just gotta take the plunge and set one up and learn patience, the most difficult thing to learn about all this. There are many volumes on the net about each. Some of the information may even be correct about them, but that can't be determined without lots of research and then thinking about it.