Some very common members of the microzooplankton community are described below. These are rotifers , copepod nauplii , tintinnids , and peritrichs . Rotifers are small multicellular organisms that have a characteristic crown of fine hairs or cilia surrounding the mouth area.
Rotifers primarily eat phytoplankton, bacteria, and detritus.
Some will occasionally eat another rotifer if the prey is small enough. This rotifer is a Brachionus sp. Copepods occur in all aquatic environments. These creatures eat phytoplankton and small microzooplankton. You can see these in this photo.