Technically they are the same fish.Exporters from Peru only pull the ones with the brightest Yellow striping and ship those out as flash zebra's {charge more money for them}.I also have noticed that the yellow can fade in and out,maybe stress,foods,who knows why.
As far as the tanks i have most in 4'x4'x18",Do you have ponds too,and more ponds getting set up.
As far as the tanks i have most in 4'x4'x18",Do you have ponds too,and more ponds getting set up.