Hi. i have a standard 10 gallon aquarium and wondering how many fish to get. I am thinking of: - 1 male betta (I already have in a 8 litre tank) - 6-10 harlequin raboras - 6 Pygmy cories OR 6 Khuli loaches. just want to make sure it is not over stocked. As I have already googled and all are comparable. Thanks for any answers.