not sure possibly radicans but hard to tell because they don't have many leaves and there is no flower. They are also young plants and many young swords look similar.
its definately not parviflorus i have that and it looks totally different, my guess would be Echinodorus Quadricostatus (pygmy chain sword) not to be confused with E.tennelus (dwarf chain sword)
not sure possibly radicans but hard to tell because they don't have many leaves and there is no flower. They are also young plants and many young swords look similar.