I really don't understand where these really have a place in the home aquarium trade. I have seen similar items at various LFS
. The few I have seen at my local LFS
have all come in on donation because they grew to big for the original owner and then the LFS
tries to find a more suitable home for them. They are definitely a novelty and a neat item as juvenals, but I do not think many people consider how big they will really get. One LFS
I visit does have a 4000g shark tank with 3 sharks (Ithink 2 nurse and 1 Bamboo and some type of Ray and a couple of eels). The tank itself is basically concrete block structure that you can only view from the top and I believe may serve as a sump for the large amount of display tanks not really much of a display like at the public aquariums.
I think if more people knew the requirements there would be less demand for these type items?