| Koi heads
I've noticed that there seem to be two types of heads or mouths when it comes to koi. There is the type that seems to do well in Japanese shows and then the type that seems to be more common. If you look at the two attched pics you will see one(kohaku) that has a very square looking head and the other (sanke) is more triangular. My question is when they are tosai how do you tell if it is going to have a square or a triangle face? Is this a bloodline trait? Certain breeders have one and not the other? More importantly how do you tell when it is tosai if it is going to have the square face or triangular? Thanks. BTW the pics are from Keirin.
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