don't worry. Just cut the pellets in smaller chunks. Just are a tip, when i got my first poly, I fed it cut up worm sinking pellets to it. There is no way a small poly can swallow such a big pellet. Also try hikiri sinking pellets. Bichirs are super hardy fish so they won't won't just die from starvation. Just as a note, I've kept bichir WAY before i've kept payaras. Bichirs are more of my speciality. lol