I have 3 Koi whom are at least a year old, and of fairly good size, about 5-7 inches. I have 4 more koi who are not quite as old, but about the same size. I haven't seen any of them spawning at all this year, which doesn't mean it hasn't happened, but I would like to know if it's too late for them to do so? Also, the water is warm enough, so I would assume conditions are right for it. Are they not old enough? Or is it maybe by chance I have all males? lol. Any help is appreciated.