They are not trifasciata. Looks more like miniature spoon leaf. Will need a better picture when they grow larger. They are know to be prolific growers.

I grow all of my sans. outside so they tend to look different than some grown inside. It does not look like my small spoons growing outside. Also, since these are still young they have not (it seems to me) taken on their full adult characteristics. Maybe when they are more mature it will be easier to ID.