This is animal rights legislation. It has nothing to do with conservation. I believe Germany has similar laws. The animal rights people say that catch and release is torturing the fish. The Swiss also recently passed legislation stating that plants have rights as well.
People who fish for food, and sport be damned, are called pot-fishermen. The more expert ones are called crack pot-fishermen. All other fishermen are called crackpot fishermen. This is confusing. ~ Ed Zern, 1947