There are actually a few different sp of Tonina Fluviatilis each with a little different growth pattern. This particular Fluviatilis is more rigid, grows perfectly upright and the leaves as you can see sticks straight out with the tops sticking upward looking ....well like a Lotus Flower The regular Fluviatilis that we all know has the leaves drooping downward and is a bigger plant overall as well.
Take a look at the pictures below of a regular Fluviatilis and the Lotus Flower kind:
Regular Fluviatilis Regular Fluviatilis taken today from my tank
Lotus Flower