Definition of continuance for English Language Learners. : 1  the act of continuing for a long period of time. : 2  the period of time when something continues. 3  law : a legal decision that a court case will continue at a later date.
Some years they spawn once or twice in spring. Some years they spawn on and off all summer. One year none of them spawned that we know of. I think that was the year 2002. My koi do not eat their fry and now that they're getting large they ignore most of the eggs as well.
Most will grow about 4-6 inches each year in the first couple of years and then it slows down in length but the girth starts to grow and thus the koi get larger in body mass. In winter some growth may slow if in a cold climate.