Hello, I was looking at getting a reef casa kit for my first saltwater aquarium (I have kept freshwater), it was the 15 gallon one here is the link: Reef Casa. (The 15 gallon option is down a bit). So I was wondering what some good fish would be and how many. I was at first thinking of clowns and a nem, but I heard some people say the clowns would be miserable in a tank that small and that nems would take over. So any help is great. Also how much harder is it to keep an aquarium that small for a beginner like me. Should I get a bigger one? I just don’t have a massive budget. Anyways thank you!