Einstein's Fish Puzzle

Just one piece from the Einstein puzzle range. How will you fare against this brainteaser?

“Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”A strange consequence of being one of history’s greatest minds, Einstein is arguably one of history’s most mis-quoted voices as well. Whilst Einstein likely never uttered the famous “fish” quote, it reflects his belief that intelligence is not something to be measured by such rigid criteria. Put your own brainpower to the test as you attempt to free the metal from the fish and then reattach it.