Not pushing my agenda merely replying to some ones post.
I fully understand what the issue is but progress and a growing population always seem to have this effect. Look what we did with the Bison in our want for more and more land. But you should take a look at how many fish species may be wiped out if not for us in the pet world. So my point is valid zoos aquariums and the pet trade can prevent extinction. But who now wants the job of telling the people who will benefit from that dam they can't have it. Everybody would like to construct a project like this without harming anything but it never seems possible. Something no matter how minute to us will end up being disrupted no matter how hard we try.
I do not want to see anything go extinct but may their other choices may have been far worse and more species would be in danger.