As much as I would like to help you, your question is too general. there are litterally a bunch of corals and animals out there to consider. you must 1st decide what bio type you want, then select the animals that will fit. or better yet select the animals you want to keep and get the equipment that you will need to provide the environment that they need. if you could narrow down your question to be a bit more specific, I will try to help. happy fishn