Surprise flower in my tank

[Steven c]

I had a surprise waiting for me when I got home from work today a plant that had reached the top of my tank has now flowered, I was told last week it most probably was star grass but hoping to get a positive ID with this flower, if you have a min and wanna help me ID this flower please look on my Flickr feed last 2 photos uploaded is the plant in question and the 4th was the same plant about 11 days ago Flickr ID is charter638
Cheers

 

[Iain Sutherland]

on flickr, open the image and go to the arrow at the bottom. Change selection to BCC code then simply copy and paste into the thread.. 🙂

Untitled by steven charter, on Flickr

 

[Steven c]

Thanks, but I'm using my iPhone for these posts, not only new to forums but new to iPhone, no I haven't been living in a cave!!! Ha

 

[Steven c]

https:

 

[Christos Ioannou]

Could it be murdannia keisak?
I hope it is I have some in my tank that just broke the water surface!