Hygrophila mutation

[plantnoobdude]

hi, a few weeks ago i found this plant in my hygro callus tank. and at first i thought it was an example of hyperhydricity, but after a few weeks of growing it out, i don't think that's the case.
i may sell a few once i get a nice bush of it and it proves it self to be a stable mutation. any opinions?
at the moment it's in my high tech softwater tank, so optimal conditions.