I just start with my 78 gallon today 42"x18"x24" I shift my 2 albino oscar 2 golden severum, 1 pleco, 2 argus, 1 loach in it. All of dem r just juveniles. Want to add 2 firemouth here. Just want to know do I overstocking my tank? Or I can add them and even more?please give suggessions. Thanx