I never pull it. She plays with him through it looking like yours with the black bands. He hasn't really banded up yet that I have caught him. He got over the divider one night and was wearing her out. They are growing pretty good and stay fat. I just got them when they were real small 1" or so. I plan to move them to a 55 with a egg crate divider before I start to let them try. They are in a 30l now. I need to set up my 125 for the 1m 2f 9" ornatum im trying to spawn so I can free up the 55 I am holding them in for the RTM.