Of course. But I think if you are in the business of buying and selling live animals, you have an obligation beyond that. Even if it means that profit is not maximized. That's not a statement I make lightly. We have a small farm, and for almost every sale, there are buyers we will not sell, say, a horse or a donkey or even a sheep to. Most ethical sellers are the same way.
Now in the case of larger mammals, from dogs & cats on up, societal expectiations, and the laws in most places, have gotten to the point that you have little choice to afford protections to the animals in question. These same standards do not apply to fish. Certainly some of them are not practical to apply; e.g, losses are going to occur when fish are shipped, just as when hatcheries ship day-old chicks. This is something that wouldn't be routinely tolerated if it was a dog or a cat. But in my mind at least, that doesn't mean you can regard selling fish as the same as selling nuts and bolts.
