I went to petsmart today looking for frozen silversides. I found them and one of the workers asked me what i was feeding. I told her i had a young garter snake who was feeding on mostly fish.....which seem to be his prefered food. he will eat worms, but with a lot of coaxing and scenting.

Anyway she asked me if i wanted goldfish. i told her i had been advised to stay away from goldfish as feeders for garters. she told me that their fish were parasite and chemical free.

i was wondering what is Thiaminase?
how does it affect the fish and thus make them toxic to our serpent companions?