Actully, the danio was on sale for $1... can't get much cheaper of solution. Sad thing though is that the danio chases the other two fish. The molly is larger and skirts away easily but the little red platy seems upset and hides alot. The two times I fed the fish, the danio and molly zipped around at top and got all the food beforeany fell for bottom feeder platy. It has only been a few days so will keep watching.