Well, I for one am glad that you are sticking with the forum, Charlie. In an earlier post, I provided credible scientific evidence that fish don't experience pain in the way that we do. I also warned against the continuum fallacy, though I didn't bore everyone by explaining it. I suspect that you didn't see fit to check out either, but you give a nice illustration of why the "slippery slope" argument is a fallacy. You say "last week it was a fish next week it will be a baby mouse and someone will go further the week after." And that's where your argument breaks down. A few months ago, a crazed young man asked about keeping Chinese mantids. His "dream", he told us, was to raise one to a size where it could eat a pinkie (the name here for a new born rat). Several of us hit the complaint button, but Rick was ahead of us and killed the thread. So you see, Charlie, your fears are largely autochthonous (in the psychological sense). Never in the history of the United States has the cruelty, real or imagined, of pet owners been used to ban their husbandry, and I don't see any politician bothering with the mantis hobby when there are so many more interesting targets!
I think that yr most telling argument is, "I just can't see what benefit in showing this video has except to please those who gain pleasure in slamming rats againt a wall." I don't think that it has any benefit and I don't think that it was intended to. But then, neither do Zoe's mantis drawings, and I enjoyed them. For me, the video (and I didn't watch all of it, partly due to my ADD) showed what I learned decades ago, (c.f. Romer and Parsons,
The Vertebrate Body 1986, Ch. 15) that a fish's ability to experience pain is limited to the skin (as the "morphine" experiments, cited above, indicate). I was fascinated to see that the fish remained alive and alert long after we would have gone into shock and died. As an aging Brit, you will probably remember what happened to Albert Ramsbottom, who was eaten by a lion, "very slowly by degrees, first his legs and then his knees, 'til he was eaten every bit. No wonder he detested it." In fact, I think that he probably stopped detesting it and went into deep shock by the time the lion got to mid thigh.
Obviously, though, you have never kept snakes, or at least never fed them rats. Snake keepers don't like to feed their charges live rats, as Bassist pointed out, because the struggling rat might damage the snake's eyes with its claws. Hitting the rat's head against a wall is a quick and humane way of killing it. Don't assume that someone is cruel unless you know their motives. Personally, I have never killed a rat in this way. My father, as kind and gentle a cockney (I already had c0ck fighting censored, lets's see what our mindless censor does with that!
) as you would wish to meet, taught us how to break a chicken's neck when I was ten (we sold poultry) and I have done the same thing with small mammals. Quick, painless, and not at all enjoyable for the executioner.
Finally, Charlie, let me make a point that has not been mentioned so far in this thread. The "feeding fish will lead to the destruction of the hobby" fallacy has two members as its principal proponents, Rob Byatt and Christian Schwarz. These are the same guys who have argued that the hobby will be destroyed if we don't call mantids by their binomial names. In both cases, the message is clear, "if you don't follow our practice, you will destroy the hobby," and the target of these polemics are the American members of a forum based in America. I am as British as only an ex pat can be, but I find this attitude contemptible.
Take care!