Quote Originally Posted by JimBob
My understanding of fish hooking means using your leg to pull someone else's out from under them, standard eastern move cut out of UFC, small joint manipulation if this includes wrists and ankles how the hell am I supposed to pin your attacks properly?
no, fish-hooking is sticking your thumbs into a guys mouth ripping his lips/cheeks open. you're referring to a sweep, which is perfectly legal. small joint manipulation refers to toe and finger locking/breaking; all other joints are fair game. also illegal are groin strikes, eye-gouging, and biting.

those rules are pretty much common to all organizations. i think certain orgs disallow head-butts, knee-strikes to the head of a downed opponent, stomping of a downed opponent, and elbow spiking. but i'm sure one or all of those things are allowed in one or more mma organizations..