Agree with above, be careful feeding large diameter pellet size. I have had bichir choke on large 10mm pellets. Retropinnis and Delhezi. Sometimes this happens because they are greedy and try and grab multiple before swallowing. I had a little trouble with NLS, but more so with Hikari's massivore if I didn't break the pellets in half. This is especially what I found in my upper jaw 12-18 inch species. Lower jaw have a different jaw structure and feeding style and I never had issue. Something to keep an eye on. They get the pellets lodged in their throat, panic, and can't get access to air. I'm still using regular size hikari sinking gold or 6mm NLS , even on my 2ft teugulsi. They can find the smaller pellets easily, and gobble them down.