Big fish look for big meals . It's about energy use and consumption . Predator fish can tell just how big a meal they can handle and try to max input at the lowest energy output. Studies show that large LMB do not favor either small tilapia or TFS. It's not an efficient use of energy . If forced to chase them around the LMB is going to lose weight . Big LMB like small LMB , bigger BG and bigger tilapia along with other stuff .