Yep, it applies even to pests apparently. Hence the need to think of ways around the rule. I suppose the answer to the tapeworm question would have to be yes.
There's a restaraunt in SA that 'specializes' in making carp taste good. It's not high on my list of places to eat. Aside from the taste being in my mind very unpleasant, the texture is also pretty yuck.
I had look at that link too. It hasn't improved my desire to eat carp.