Micro, meaning small. Fauna, meaning animal. Your/our reef tanks are populated heavily with them. More especially, with
LR and LS as the tank matures. Very often Micro Fauna cannot be seen clearly with the naked eye and is best seen using a low power microscope. The best example I have to show you is this picture.....
It's of my Blackcap Basslet but what you see on the aquarium front pane is copepods, an example of Micro Fauna.
