Ok here is a mystery, and I'm trying to figure this out. I got a huge snail problem in my 500g and were talking millions, from too much food laying around from my RTCxTSN and gar. I added 3 bass, same thing sometimes they ate and sometimes they wouldn't. More snails. I just got an ornate birchir, more gars, African pike, sa pike, and a blood parrot. After 3 days it takes some serious searching to find a single snail bigger than a speck of dirt. I don't know what could possibly eat that many snails that quickly and effeciently. I ruled out African pike since they are fast killers not gracious. Blood parrot is 8" and fat, but not that fat if he ate that much. Sa pike same reason as parrot. Birchir? I have amazon swords that were covered, but don't have many teeth marks and my 22" birchir I think would eat the whole plant. He's def big enough, but idk what do you think?