Thiaminase is thiaminase. When the B1 deficiency hits it's normally a death sentence for the snake. I love to watch my snakes fishing and I know they love to eat fish but the joy I get doesn't cancel out the danger to them. With guppies available in most areas, they still get to fish. Before I knew about thiaminase I would feed minnows once a month. Then I learned about the other minnow problem, parasites! I diced up a minnow for a group of babies and found a worm inside.
Thiaminase + parasites= NO MINNOWS