Minnows

[Zephyr]

Not even then.


i.e. alive.

I can report no problems from feeding adult snakes live rosy reds/goldfish when scented pinkies weren't accepted.
No stunted growth, no jerky movements, and no abnormalities in litters. In fact, my female eastern who was fed primarily on tilapia/salmon chunks dusted with calcium carbonate/reptocal had the largest number of casualties in her litter.