Hi! So I have a fish pond outside, quite spacious. Some Fish have been eaten but we have extra precautions since then. i have 6 koi, all of which are 15+ inches, they have survived 2 winters, I have quite a bit of cometgoldfish, they had babies but we gave them away to keep our pond spacious, the comet fish, the older ones, survives 2 winters, babies when grown were healthy, atleast it seemed. And I have one black moor, that survived one of the coldest winters in Ohio. It wasn’t my idea to have it but it’s thriving! Anyways, hope you enjoyed reading!