Ceratophyllum (B2610) is a beautiful floating plant that does really well in a cold-water aquarium.
The plant spreads lightly through the water and is very edible. It is very decorative for a lovely bowl of water.
Certaophyllum does require a lot of light, but do not place it in the sun. It produces a lot of oxygen.
Your fish will be very happy with this plant.
Buy Ceratophyllum now, because it is so beautiful at the moment!