What happens when a creature that Lives in Toilets Dies in Clean Water?

Q: Taharaat-62: A Sandaasi (a little red creature that lives in toilets) was found dead in clean water. Will the water be rendered impure?

Answer: Because the Sandaasi does not have flowing blood, it will not make The water impure by dying in it unless it had impurity on it when it fell in.

Fatawa Rahimiyyah vol.2