at the moment my goldfish live in a 72x24x24 tank, but im considering rehoming my commons and keeping just my moors and orandas. i have 2 moors and 7 orandas. they will be staying with my 6 dojo loaches. how many of the 9 fancies could i keep in the new tank which measures 48x20x28 along with the 6 dojos? the filtration will be an fx5 and a fluval 4+. weekly water changes of 50-60% as usual.