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.
If the pond is too small and doesn't get enough filtration or water changes, toxins will build up that can inhibit koi growth. This is called stunting, and of this is allowed to happen, they will live a short life as their organs give out at an early age.