We use to turn the tv on for our pets. I still turn on the tv for my fish. They can get bored very easly & get into trouble, like destroying their bubbler & filters (I have very smart foot long fish, I gotta please them).

I find with the tv on, it creats noise & human voices. I usually leave it on the cartoon network, because alot of the cartoons have flashy colours & that gets the fish(s) attention.