How are shrimp crab and lobster halal ? How do most scholars know the difference between fish and shrimp are there scientists that help them research this?

According to the Hanafi Math-hab only Samak (Fish species) is permissible to eat from the sea animals, therefore crabs and lobsters will not be permissible to eat. However, with regards to shrimps, if they are categorised as Samak then it will be permissible to eat otherwise not. Some jurists have categorised it as fish and others have not, therefore it will be Makrooh (odious).%0D%0A%0D%0ATo consider the order of the Surahs is from the etiquettes of the recitation in Salaah. Although inconsideration of the order may not affect the validity of the Salaah in any way. (Raddul Muhtaar, Vol. 1, Page 404)%0D%0A%0D%0AIt will be permissible to sell marijuana for medical purposes, otherwise marijuana, pork and alcohol are haraam to sell but pork and alcohol has greater prohibition attached to them. (Ahsanul Fataawaa, Vol. 6, Page 494)%0D%0A%0D%0A%0D%0AIf a woman is well acquainted with the Islamic jurisprudence then there is no harm in following her Fataawaa.%0D%0A%0D%0AIf it is possible for a person to practice freely on Deen in America, then it will not be necessary for him to move to a Muslim country.%0D%0A%0D%0AAnd Allah Ta?ala knows best,%0D%0A%0D%0AMufti Muhammad Ashraf%0D%0ADarul Iftaa - Jameah Mahmoodiyah, Springs%0D%0A%0D%0AJOINT PROJECT WITH DARUL IFTA, MADRASAH IN?AAMIYYAH, CAMPERDOWN%0D%0A