1) Why on Earth would you want freshwater fish in a reef enviornment? I'm pretty sure I'm coming from a SW standpoint, saying FW is nothing compared to SW.
2) Saltwater fish are made to live in saltwater. Freshwater fish are made to live in freshwater. Brackish fish are made to live in brackish water. End of story.
Oh, Ionballer, Clownfish suck. Everyone and their brother has a pair, and if I could trade them I would. I'm not saying I hate mine, it's just that there are so many other better fish.
Plus the females bite. Hard.