As already advised by the others. If u can get those pieces so small enough they are gulped up with one motion/bite then it’ll be quick. Especially with the tilapia. My old ropes ate everything I offered. If the pieces were a bit bigger would mouth on it and move on and try another. Keep trying and I’m sure U’ll have success.If you havent tried it yet please do. Just cant be the only thing it eats. Keep trying the other stuff too. Fatten him up on tilapia then give a few days and try some pellet again. Also try breaking the carnivore pellets in to 3 smaller pieces.