ok well my buddy gave me two frontosas about a month ago becuase he bought two of them and he did not do his research about the fish and had them in a 20 gallon tank, so once he found out how big they got he figuared that it was going to work out. so he gave them to me. they are only around 2 months old. they are both 6 stripped. but how old or how many months do i have to wait to see if they are male or not. i really like the hump in them. i know males get bigger humps then females do. but how long do i have to wait. and for all you asking how big my tanke is it is 125 gallons so i think that will be ok for them. thanks for you help andy

cheffi, it's when do they get
I cant disagree more, water quality has nothing to do with it at all, frontosa are bottom dwellers by genetics and feed most easily at night on the lake/tank floor. when we feed floating foods fronts tend to gulp and take in air that builds up, even when feeding live feeders they can collect excessive amounts of air just from the air in the swim bladders of the feeders. There is no "most susceptible" variant thats a falshood. The fact that Mpimbwe are imported most in recent years and their eating habits (pigging out/over eating) leads people to believe that it's specific in Mbim's. It happens to all variants...