Hi guys, I recently upgraded one of my 10 gallon tanks to a larger one and gifted the old 10 gallon to my 10 year old cousin. We're using the same filter/media/decor that I had in the tank originally and all the water test are looking good. I'm taking him tomorrow to buy some fish. Any suggestions for easy maintenance fish to get that will also keep the attention of a child? I'll be going over weekly to help maintain the tank, but I want to make sure he's invested and hopefully will stay interested in the hobby. My aunt isn't completely sold on this venture, so I'm trying to keep everything as easy as possible. Thanks in advance for the suggestions!