Quote:
Originally Posted by Pudding4brains
Hope they didn't dump both males and females in the canal 
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Never thought of that! Wonder what effects it would have on the area... You never know, people might start keeping the canals cleaner if they think that there is interesting wildlife in them or able to live in them.
Can't imagine anything being able to survive in the ones in Amsterdam, they are disgusting, even though they do seem to be slightly cleaner; you only see the odd bike chucked in nowadays!