we have a plant like a peace lily in the fish tank at the school where i am caretaker it has just come into flower under water can you tell me if it is possible to be a peace lily

It isnt a peace lily. It was a plant from my childhood tank. Vallis or Vallsinaria? sort of rings a bell. I cant remember its name but if it comes to me I will re submit a reply. try googling tropical fish tank plants.

Have you got a photo of it?

Thank you for your comments. I will do as you advised. At least i have something to go on. Yours Gordon