✡ Read around about fish. It seems as if one of the largest reasons for death is jumping out of the tank. I have had several fish jump out, even a couple get caught and put back in. Wrasses are especially prone to this form of piscean suicide. I have constructed a wooden frame with a screen attached to it with velcro. This way I can open parts of it to feed them. It also holds the complicated lighting system in place. There is only a small sliver of an opening around some of the plumbing. Somehow one of my gobies jumped out thought this little opening. I found it dessicated on the floor this morning.
The good news is the harem is still going great.