Okay, I know about Thiaminase. As a treat to my Radixs they get some Fathead minnows once in a great while(once every couple a months). They otherwise get pinkies, worms, salmon. Tonight was a treat night for them. My TLC group are small so I cut the minnows up. While I was dishing out some parts I saw this in the food dish. Round worms I believe. Now, I feel terribly guilty. Should have frozen them for a month. Better yet not even have bought them. Thought I post a photo.