My orange tetra glofish has always been a little strange. I have had him for maybe 5 or 6 months now and even when I first got him, he would float in one place for a while by the filter. I thought maybe something was wrong but every now and then he shows crazy signs of energy zooming all around the tank for a bit. After that he always went back to floating in one spot for a while. His latest thing now is going underneath the air bubble stone which is a device that makes it look like a river but its all the bubbles and he can fit comfortably underneath. He will literally sit down underneath there for awhile, moving every now and then. Maybe he likes the bubbles going passed him and kind of hitting him. I put a home in the tank and he will sit inside the home on the bottom. He never lays on his side, always sitting up right. Once he is done sitting, he will go and zoom about the tank and go crazy and then either hang out in the plants while floating and moving or he will sit back down on the bottom, under the bubble machine thing, or sit in the house. He could just be a funny fish since he has been like this ever since I had gotten him. Has anyone seen this before? Is he just a weirdo? Thank you! I attached a picture to better show the bubble machine with him underneath it. Sorry for all the terrible grammar, thank you.