Steve I have to say you might not sell koi like above, but it happens everyday. Over the years we have got thousands of koi. A lot were from domestic breeders. I have to say Steve you are so wrong with saying breeders do add them to the bag. I have had koi that you could see from a block away the deformity in it. Over the years I would guess I have put 500 or more koi down because of all of the thing you said.
Here is a picture of some domestic koi we got a few years ago. The only picture I could find is this one, but I had a picture of the whole bag of them before. This is how 2 box's of koi came. This picture was taken as the bags were open.
Is this a koi that should have been shipped. Remember it was 100 koi just like this one, not just one. The people that sold them to me said they were just a little thin. I guess they were, but it was from costia. He would not do a thing about the sick koi. I must of got 5,000 koi or more from him over the years, and he doesn't want to do a thing about it. That's not right if you ask me.
This is just me, I can't talk for others. But it seems like some domestic breeders don't care much about the customers or dealers. It's all about money. If some of these domestic breeders would talk to people like Brett and Brady they would have more customers/dealers talking better about them. This is part of the reason I don't buy to many domestic koi anymore. Most hobbyist don't care much if they are pond mutts or not. So I will not put them or you down if you breed pond mutts or not. Like you said pond mutts can be healthy koi. Pond mutts are get for most people starting out because of the cost of them.
As for imports I have to say it's night and day if you ask me. The down side to this is the cost. Most smaller dealer buy them from other dealers, so by the time they get them the cost has gone up a few times higher. When you get people out to buy koi, a lot of the time they don't plan on spending $20+ on a small koi. This is why we still sell some domestics. But a lot of times they see what they can get for $10 more and go with imports. Maybe the reason I don't get to many deformed imports is because they have been handled by a few people before I get them. But since we have been selling them I can count the deformed koi on one hand. This is another reason why I like imports over domestic koi.
As for deformed koi being used as breeders I don't know much about them. Maybe Luke can give us a little more info on that. I think he works with one from time to time, is it maybe that breeder he's talking about?
Tom