It sends floating leaves. The Nuphar, Nymphaea and Nymphoides genera of plants will all produce floating leaves, depending in some cases upon light intensity and/or substrate enrichment. The latter genus is the banana plant, so called.
For true floaters, there is Ceratopteris (Water Sprite
) and Amazon Frogbit
). I have both, the latter flowers, quite lovely little flowers actually, most aquarium plants don't have much in the way of flowers but when my Frogbit bloomed I was quite surprised. Duckweed
can be a mess. Salvinia
is a similar but nicer (in my opinion) plant, but also small and thus likely to be more like Duckweed
. The other two I mentioned have larger leaves. Ceratopteris will spread right across the aquarium surface quickly, it is a good plant for water filtration because of its fast growth. And very useful with its dangling roots that hide fry, support bubblenests, serve as feeding grounds for many fish, etc.