Are all water plants algae?

There are a lot of plants in the water, but not all of them are algae. Algae are plants that do not have real organs and tissues, and chlorophyll is in a special bag called a chromatophore. In our rivers there are unicellular green algae (chlamydomonas, chlorella) and filamentous algae (ulotrix, spirogyra). But, besides them, there are mosses (riccia), and ferns (floating salvinia), and a huge number of species of angiosperms (white water lily, duckweed, pondweed, arrowhead and others).