Can you try to take some pictures of the blobs and post them here?
What size were the CC you put in the pond and when were they stocked?
I would bet they are Bullheads "Mudcats". I believe this is how they like to hang out.
They seem to creep in from anywhere, have you stocked any FHM, if so where did you get them?
Did you build the pond or is it an older one?
You will get some good responses from the Pros here and I would like to see what they think as well as how to get rid of them if they are indeed Bullheads.
I would think if you have bass they would eat them up, but then again I have heard it is pretty easy for the nasty Bullhead to take over a pond.
I made the lovely mistake a few years back of putting a few of these in a pond. I have yet fish it since and hope they were all males, but with my luck I am sure there was 1 male and the rest were female, probably already carrying eggs.
This of course was before I ran across this site and have learned much of what to do, and still trying to learn some more.
Again I am waiting to see what you find out, so keep us posted, in the mean time I would try to get as many of them out as you can via net or trap.
You may want to check around where you are and see if someone likes them as bait or even food etc. You may be able to sell a few.
Thanks