There is a big difference between algae and fungus. Mostly, fungi grow on wood when it's new and eventually go away. Shrimp & snails will both eat it.
Algae comes in many different forms, some of which are eaten by various critters, and some of which are not eaten, or only eaten by one or two critters. Those moss balls you see are actually a type of algae but not one that spreads, and nothing eats them that I know of. But they harbour plenty of infusoria that fish, shrimp and snails like to eat.
I am not sure what kind of algae that one is, but if you don't like it, tearing or scrubbing it off is the quickest way to get rid of it. Lighting as long as you did before encourages all sorts of algaes to grow, so it's good you reduced the light time. You could possibly reduce it to six hours for awhile, to see if that helps discourage this algae.
Edit: Amano shrimp are well liked because they do eat several types of algae , but they don't eat all types. Nor do snails or fish or other shrimps. I have seen reports that ramshorn snails will eat Black Brush Algae, but since I've never had it, I don't know for sure if that's correct.
If you happen to have any scuds, they are voracious algae eaters. I keep some in a small tank and drop any algae infested plants into that tank, where the scuds eat it all. Then the plant goes back in the main tank.. and often a few scuds too. Fish like to eat them, and I don't mind them, so I don't care if a few get into the big tank. The cories and loaches love them.