I'm not sure, Tony. If you're not catching a few hundred and shipping them out, perhaps it's not worth the cost and hassle. Maybe you have to be a certain commercial entity (i.e. if you're not getting research collection permits) to get them...and again, maybe there are fees involved. I'm not sure, but in an age of easily acquired GPS coordinates, I just don't understand how we don't have better information than we do. Well...I do. We're dealing with the commercial beast that is just about getting and moving large numbers of animals and they're not concerned with details like site specificity.
The killifish hobbyists collect their own, but they're also doing it because they want to (I assume)--it's what interests them. Perhaps it's not about getting their money's worth through what they breed and are able to collect. I'm not sure. Maybe it IS about having something new, some new wild blood, and they plan to recoup all the costs. I think it would have to be a hobbyist or few who were just passionate about the animals and willing to go through the effort and cost of making it happen.