Hi all, I added 3 sterbi's to my 65 G tank 7 days ago. i am just wondering if them always zipping around on the glass at about mid tank level is normal behaviour. When they were in the store they seemed to be very calm. My tank is 1/3 planted now and there is some rock and wood for them to hide around. I also notice when I feed the tank they will goto the bottom and eat, but then its right back to the zippin around. Any suggestion's or advice? Thanks !!