Peek-a-Boo has this nightly ritual of attempting to jump out of the tank and waking me up. No clue why, but jeeze it's annoying.
She had a MASSIVE one when I got one, and it's sllooooooowwwwwly going away. She still smacks into the glass in her freakouts too.
She is more skittish than a normal solo, she'll panic at lord knows what, and go flying across the tank to smack into the glass on the other end, hard enough that I can hear it in bed. Every night she jumps up and smacks into the lid. Overall, my fish is a lot noisier than my rabbits!