First of all, I have never known of any poultry that will break a good egg. It is the job of a bird, to eat any broken eggs and shells that are cracked or broken, so that predators will not be attracted to their nests. I have fed eggs back to my chickens, ducks, turkeys and if there is any, that are not cracked or broken, they will not break and eat it. Every broken or cracked egg will quickly be eaten up. If a chicken accidentally, breaks an egg, she/he is clumsy, overcrowded with too many eggs in the nest, or the eggs have too soft of a shell for the chicken's weight. In most cases, the egg yolk will also get onto other eggs in the nest. I have heard people say not to feed raw eggs or eggshells to chickens, either. I saw hogwash! I bet lots of chickens will end up with koolade becks, because they will all join in when an egg breaks!
I know catfish are bottom feeders and eat all the dead things that sink to the bottom of the water. They clean up the water of waste and filth, just like Shrimp, Crabs and crawfish. Oysters are the water filters and also consume the filth. I did not know that Tilapia was also in this category, but I do know that not all fish sold in groceries are the type they say they are. The TV news had a special about this not long ago!
I am working on an experiment to try to tell the sex of very young turkeys, that is going along well, but is not far enough along to comment on it yet. With many breeds, you have tells regarding color and edgings of the feathers, but in all white feathered turkeys, it is not so easy! So far the first 4 turkeys banned has been 100 % correctly sexed, but like I said, more poults have to be banded, before any accurate results are known! When I am reasonably sure I can tell at a day or a week, all will be revealed!