Those are some very nice EBH's you got there. If you keep feeding them the way you are I would expect around 1" of growth per month. I have noticed they do freak out when I drain to much water out of their tank when I'm doing my water changes. I'm surprised your pangasius haven't eaten any of the fish in your grow out tank, at that size I would be in fear of my fishes lives. I can't want to see the new video. I have never notice mine jumping when the tank is full, I'm thinking they just don't like to be cornered so they try to escape by jumping. I'm so envious that you could find 21, I would have scooped them up to if I had the chance. The odd thing I have noticed with mine is that they don't like to school with the ERH's that I have with them, it might just be a size difference but I'm hopeful that they may school one of these days.