New answers tagged fish
I am linking here to the Star K guide http://www.star-k.org/2015PetFoodList.pdf. That may be a help. I will quote what they say about fish food. "Fish food and vacation blocks often contain chometz. Tetra Tropical Slow Release Gel Feeders (Tetra Weekend 5 days, and Tetra Vacation 14 days) are chometz free. Goldfish and Tropical fish can be given tubular ...
R' Cohen in Dose of Halacha quotes R' Ben-zion Abba Saul who does allow you to use flakes, though writes that others advise you to buy worms, etc. or something that is chametz free. Rambam (Chametz Umatza 4:8) and the Shulchan Aruch (OC 442:4) write that one does not need to dispose of a mixture containing chametz that is totally inedible (by humans). ...
This is not permitted because one of the restrictions of Pesach is that you are not allowed to derive any benefit from Chametz. See http://www.kosherquest.org/aboutpesach.php
Top 50 recent answers are included