Angelfish burying in the substrate?
Hello. I have an odd question about an occurrence I haven't heard of before, but has happened to me. The angelfish in my 55 gallon have been doing pretty well adjusting over the last 3 days, but they are very skittish when we go by the tank. This morning I could still only find 4 of the 5 fish. Was looking around the tank and my girlfriend discovered a tail sticking up from the substrate. Yes it was an angelfish tail. It had buried itself face down into the black diamond. I figured it must be dead because I had no idea how long it had been like that, so I decided to get it out ASAP. As soon as I disturbed the area around it, it took off around the tank and now seems fine. I can't even really tell exactly which one it was. Has anyone had this happen before? I can't really even think how it did it, I guess it was scared and just swam straight down? It was earlier this morning and we hadn't even really been in the room so I don't think we scared it. I have been watching them and I am also pretty certain that it isn't some aggressive behavior getting out of had either. So far they have shown no behavior towards one another. Anyway, anyone have any thought? Something to worry about or freak occurrence?