Early morning I totally get you on the fish. We have two ponds on each side of our front walk way. There are goldfish in the smaller one and one morning we noticed the water was low and saw no fish. We figured a racoon got in, caught them and punctured the liner in the process. We drained it to find the leak and left it drained for a few days as we moved rocks around. We filled it back up and they other day my husband walked out the front door and saw fish!! They must have gone to the way back under some foliage and hunkered down in the shallow water. So happy we still have them. There are koi in the larger one and we have lost a couple. I know they are only fish but they greet me at the edge and eat from my hand. I have years invested in them and it is very upsetting to lose one.