My husband wanted this 5 gallon tank and we have it all set up. It has a filter and heater and it looks great. It is currently going through a cycle. What I wanted to know is what fish would be suitable for this tank. I see that neons, white minnows, platys and cherry barbs are all small enough, but how many to get? I see that most are schooling fish and I would hate to get less than 6, but I know that more than two would be too many. Any ideas?