There are flatworms large and small, but think they are pretty much the same clear sp.? There are some on the rocks, glass, frogspawn, and other soft corals. They tend to show the color of their attached surface and do no seem to have an ill affect on anything, yet.
They are starting to become an area of concern because they are growing in numbers. I am trying to prevent plague proportions as it doesn't seem that there is anything to keep the numbers down. I know of flatworm exit but at this point think that if they were to all die at once it would be a problem, I feel that there are that many.
I'm aware that every individual organism is hit or miss, as is the same with other animals I have worked with reguardless of sp. I'm just looking for one where it is possible and known to be on the menue.