when i bought him he was hooked on feeders, then after a while i got him to switch 2 arowana pellets and now that i have know ride to the pet store to get more pellets i have no choice but to feed him feeders from my feeder tank. but he wont even except it even at night. ive also tried tilapia slices but he wont even except it . so how can i get him to eat feeders again?