Ill mention it now then. DISEASES! CB does not mean disease free. It goes along the lines of Store bought feeder fish. You don't know whether its a clean viable source it not so the risk ultimately outweigh the benefit!!. About the Crustaceans and arthropods being the same? Nowhere did I say they were the same and just for the info. Crustacean shells may comprised of less calcium than that of arthropod, but their chitin is much harder. They must bear the pressure of water constantly pressing down on them for the majority or near all their lives. Air doesn't produce the same amount of pressure.
Anyone who buys pet store feeder fish risks the animal they feed them to, to disease exposure. Not to mention antibiotics that are added to the water source. They are your animals so do what you will, but I have now warned you and now you know.
I will not be posting here again in this thread.