Opinions on feeding fish.

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Greetings Everyone,
I dive moslty local lakes and would like to feed the sunnies a few times a year. Different lakes, different places. I don't want them to change their eating habits and see divers as the only food source or feed them junk. I was thinking bits of shrimp from the supermarket. I'd be carfull to not over feed. Probably chop up a tablespoon or two at home and release a little at a time durring the dive if I find a group of sunnies.

What's the impact? Any DNR issues?