Idk if I'm the only one but my bichirs love to rearrange the decorations in the tank. I'm not worried about them colliding with the rocks and driftwood (I notice they heal from that rather quickly). My question is I have a couple of holed rock decorations their white and look like coral. I had to pull one of my Delhezi's out because he got stuck. I took it out the rock and went found one with bigger holes, but has anyone had a Bichir that drowned their self, or is this normal behavior? I'd rather be safe than sorry.