I know I still have a considerable number of 2 to 5 pound CC in my older pond. Some are albinos and I can easily see them. When I feed pellets (about 8 oz twice a day), only two large albinos (maybe 5 lb) and about two or three regular CC come to eat the pellets. I can see other albinos and sometimes regulars swimming around about two feet down under the pellets, but they never come up. About four or five CC are getting all the pellets that the big BG don't get. Is it common for CC to quit eating pellets once they exceed three pounds or so?