Ok. What's intended in the sticky is that frozen fish shouldn't be a diet staple because it's too high in protein. Once in a while as a treat it's fine. That's the way the minnows are used - frozen or fresh they can be fed to the turtle as treats once a month or so. (thawed before serving it to the turtle, of course.

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On raw chicken and raw beef, a little chicken as an occasional treat is ok but it should be cooked first. Beef is, general speaking, just too rich for a turtle, raw or cooked.
Hope that helps.