Rain zbarrel for Minnows

Have a full rain barrel pretty much all summer and was thinking of dumping any catches from my minnow traps in the barrel. The water always seems to be full of mosquito larva swimming around which might help for food.


So my question is, has anyone used a rain barrel to keep minnows?
If I were to use an electric aerator, would it have to run continuously, this is a 55 gallon black plastic barrel?

If you tell me the aerator would have to run continuously, what brand of aerator would you suggest for this task? Thx