Hi everyone! Now first off, I've got to say I'm the worst beginner for an aquarium. I'm using a 7-Gal vertical tank from my parent's storeroom that has iron parts holding up the corners (aka-rimless). I originally thought less was more until I stumbled across this site and all the forums. So anyway, I originally wanted to house a Betta but now I'm not so sure. Can anyone out there suggest me a good beginner fish or inverts for a beginner, please?