As far as tatooing fish goes, I think it's silly. I try my best not to get emotional on these subjects but the bottom line is that human vanity knows no bounds, and thus we change our environment as we see fit to those ends. I'm not one for it, but I'm not gonna show up at the manufacturer's door with a torch-and-pitchfork.
Dang... I want a Yap Mandarin again now.