Why are only fish with scales considered to be halal? Why aren't fish without scales halal? - Quora

Answer (1 of 10): Opinions vary in different jurisprudence schools. Shia in particular, have strong Hadith condemning eating of anything from sea except fish with scales and shrimp. However, none of these Hadith ever call it Haram, they simply strongly suggest to the Shia not to eat these foods.

Which fish do not have scales? - Quora

Is Crab haram or halal? - Quora

What are the inedible parts of a fish? - Quora

What makes an animal not kosher? - Quora

Why is shrimp considered halal? - Quora

Is it true that all fish are halal? - Quora

HALAL FISH IN SHIA FIQH Eat any - Shia In North America

Why is there no Halal/Haram in seafood? What makes All seafood

Why can Shia not eat fish with scales and fins? - Quora