thats an old video on my gf's youtube account - was performing water changes
-look at the two smallest ones and the two medium sized ones (both 5"ers are perfect 4 bars, the 3"ers are a split bar on on side/4 bar on the other, and 4 bar on both side it seems, just look at the video
*to anyone who was wondering when viewing that video, that injured goldfish was eaten by the smallest bichir