(no subject)

Oz is the strangest fish I have ever had. He's been jamming himself underneath the base of a fake plant recently. He lays there for hours. I thought he was dead today so I went to get him out with a fish net. I moved the plant and he kinda floated up a little then settled back on the bottom without moving. When I went after him with the net, he started shaking a fin at me. Then he acted as though nothing had happened. I put the plant back and he's back to jamming himself underneath it. Why is he doing this? Is it bad? If not, I'll just let him be himself.