I'm the last person on this board who is qualified to talk about the eating habits of aquatic species, but I've heard some people say that grass carp will eat algae. Afer doing a bit of research, however, it seems that they focus more on aquatic plants than FA.
According to
http://www.aquaticmanagement.com/grasscarp.htm "Filamentous algae may be controlled by grass carp 2-4 inches in length in ponds without predators. Larger fish may consume filamentous algae but it is not a preferred food and effective control may be unpredictable."
Obviously plankton eat algae, but I'm not sure many fish do. I found a fish called the Siamese Algae Eater that supposedly eats red algae, but they seem to only be in Thailand. Have you heard of them, Rad?
Anyone else know of any fish that eat algae?
