A friend of mine is planning on gifting my 9 year old daughter with a 10 gal. that will fit on her bookshelf. I have not had a whole lot of experience with fish tanks and currently have a 20 tall and a 20 long with live-bearing fish in both. The betta in the bathroom I have managed to keep alive for about 2.5 years and he still looks happy but I have already lost fish in my 20 long guppy tank, not to mention two of the ghost shrimp also. I'm worried that she will be heartbroken if any of her fish die because she seems to be so attached to the fish we already have. Help me please with setting up this new tank and figuring out what to put in it. Please and thank you kindly in advance for your wisdom.