Dean - Yes a dense or "good" population of crayfish will reduce rooted submerged weeds. Species or palatability of weeds will make a difference as to how well crayfish consume the weeds. Ponds with low or no crayfish predators are usually murky due to lots of bottom activity of crayfish and no or very few submerged weeds are present.
Last edited by Bill Cody; 09/06/07 09:24 PM.
