shrimps

Q: I would like to know what types of fish are permitted to eat? I mean we as Sunni are told that shrimps are makrooh? What about Shark fish?

Q: In Saudi Arabia, almost all types of sea-foods are available and used. What is the Shar'ee ruling with regards to different sea-foods, especially prawns, shrimps, oysters, squids, snails, crabs, etc. according to the hanafi madhab?

Q: What is makrooh? Are shrimps, prawns and mushrooms makrooh? Can we eat these things?