God Bless people who review movies on Amazon.
First, it's hilarious.
Second, I agree- I'm not a fan of the movie. Not because you don't see the fish's d***, but because the fish-man is SO fake, it looks like the worst 1950's B movie prop ever. They could have made him more "realistic", while still keeping the tone of the movie intact.
And of course, you can't see the fish's dick.
And that bothers some people, I guess.