There are also long finned WCMM. Sometimes referred to as Meteor minnows. WCMM are actually some of the most beautiful fish when in a tank which has lots of plants for them to play through and as they mature they become gorgeous. If you do buy them, make sure not to get the feeder fish cheaper ones as they will not be as well bred /selected as the "pet" variety. They get more colorful as they mature.
How cold do you anticipate the temp would go down to through the cold parts of the year, winter and or if the AC is on in summer.
Often people will keep a heater at a lower/minimum temp for the cold/cool water fish. Just to be sure that it doesn't get too chilly for the marginally cool water fish.
Platy.