[spaghetti]

I think that any fishing gear shop, as well as the local government office, can give you the proper information on sizes, limits and eventually forbidden areas.
For identifying fish, you'd better learn to recognize them and memorize once and for all before you go hunting. Buy a book, or surf the net.
I know it's not easy, but you can focus on some details for ID at first sight: colour, of course, but also the shape of the tail and of the fins are the quickest points of reference to watch.