F38Chapter of Waters
Ruling on the death of aquatic animals such as fish in water
Does water become impure when an aquatic animal such as a fish dies in it?
Hanafi
Water is not made impure by the death of what lives in water, such as fish and crabs; its purifying power remains and its use is not disliked.
Reference: Al-Hidāyah — Radd al-Muḥtār — Marāqī al-Falāḥ
Maliki
An aquatic animal such as a fish is pure both alive and dead, so water is not made impure by its dying in it and stays tahur, removing hadath.
Reference: Al-Sharḥ al-Kabīr — Ḥāshiyat al-Dasūqī — Minaḥ al-Jalīl
Shāfiʿī
The carcass of a creature that lives only in water, such as a fish, is pure, so it does not make the water impure and purification with it remains valid.
Reference: Minhāj al-Ṭālibīn — Al-Majmūʿ — Mughnī al-Muḥtāj
Hanbali
Water is not made impure by the death of an animal that lives in water, such as a fish and its like; its purifying power remains and its use is not disliked.
Reference: Zād al-Mustaqniʿ — Kashshāf al-Qināʿ — Al-Inṣāf