I may start adding krill and switch to a different pellet to my feeding routine to see if my albino senegal bichir can add a little length like yours did.
Already got tilapia from walmart . To be honest my albino senegal bichir has over taken my short body albino senegal bichir faster than I thought he would after I started feeding the tilapia occasionally so I thought if I did what you were doing he could grow a bit faster even.