I was at a petshop and they have a beautiful 200 and somthing liter aquarium there on sale. And I am tempted to get it. But I am unsure what fish to have there, just platy and sush would not be so visable, just red little specks, so I want fish that are a bit bigger, but not huge, what do you recomend?

And there is another tank, more expensive but it look even better, it is bigger 500 liters or so would that be better, what would be the difference between 200 and 500 liters. The reason why I can consider getting a bigger aquarium is becouse we have to move to a bigger place.