A fishy tale

There are a lot of migrant workers in East Anglia providing a large agricultural labour force. They live in camps in remote parts of the fens (I only know this because of my visits to farms and estates on Barn Owl business). I have noticed near reservoirs and fishing lakes that notices are going up in various languages, including Portuguese, and in various Slavic and Baltic languages, advising that it is illegal to catch fish without a licence; and, even more wicked, to take the fish and eat them instead of throwing them back.
So, guys, we have some hard choices to make: ban anglers, ban migrant workers or ban fish.