My reef tank is in my bedroom and at the left side om my bed. There is a TV that I always put to sleep when I'm in bed. Last night I forgot to program it and 4:30 in the morning I woke up with a cracking noise. I was going to have a heart attack, because I thought the tank will crash. Nope it was my
pistol shrimp. It was standing near the front glass and punching the glass. tac tac, tac tac,... I turned off the TV, and amazingly he stopped punching the glass and went inside his tunnel and never punched again.
I think he wanted to say " hey its 4:30 in the morning, we're trying to sleep here, turn that **** TV off or I'll give you a good flood" or whatever. It was strange.