“{{w|Rotifer}}s are transparent microscopic animals which live in fresh or salt water. They abound in the surface waters of great lakes, and swarm through the shallows of ponds and bogs; there is scarcely any stand of soft water, whether transient puddle or rain-barrel or fountain-basin, where rotifers can not be found. They live in ponds and lakes, providing a large part of the food for small {{w|crustacean}}s and worms and are thus indirectly a large source of food for fishes.”