My banded watersnake female was started on pinky parts when I got her from her breeder, and she has been eating pinky parts ever since and is very vigorous and healthy.

I haven't read of any health problems in captive snakes that were caused by feeding frozen/thawed mice. However Ive read of many problems or possible problems with feeding fish/amphibians etc.

What is your opinion that water snakes shouldn't be exclusively fed mice, based upon? if there is some kind of recorded health problems caused by feeding frozen-thawed mice to watersnakes, I would like to read it. Thanks