I used to keep fish as a kid and I’ve recently started to get back into it. I have an empty 20 gallon tank. I really want to do my research and not jump into anything. But I want to do an all blue freshwater tank. I’m looking for peaceful fish That would be easy for beginners to help thrive. Also any live plant suggestions and filter fish would be much appreciated. I’m way far off from buying any, fish now but I’m just trying to get the group in mind. I want to have all of my tank accessories and get the water ready before I put in fish.