I like the mbu puffer and I did research and I did research on the fly river turtle. I want to keep the two together. I know what when the puffer gets larger it can turn and kill it, but I know it has been done before and it is a really nice combination. Seeing that I found a fly river turtle in my country for a low price $299.99, I want to get it and at the same time the puffer. Is this a good mix? Please let me know so I dont waste my money and end up with 1 fish.