I understand the logistics about attracting visitors to zoos and why zoos with obscure species, such as RSCC, have problems in being financially viable. I just wish that zoos were honest with their customers. Many exhibits are built to make money and not to save species from extinction, despite the publicity attached. Many species have more than the 200 individuals needed to save a species from extinction over the next 100 years and there are ethical concerns in spending more money on these species while allowing others to become extinct.
Leslie Kaufman wrote an article called 'For Zoos, Bitter Choices on Life and Death' for the New York Times and this appeared in the Observer on June 3. It mentions that Dr Steven Monfort suggests that zoos should provide facilities for animals to develop more natural reproductive behaviour and that popular animals, such as African elephants and California sea lions, that are doing fine in the wild should be replaced with animals in desperate need of rescuing. Zoos have been culling some species and replacing them with others. For example, they are saving pied tamarins rather than saddle-back tamarins, black-and-white ruffed lemurs rather than black lemurs, Addra gazelles rather than Mhorr gzelles, eastern black rhinos rather than southern black rhinos, Chinese alligators rather than American alligators and Toco toucans rather than red-bellied toucans. In some cases both examples are critically endangered and in others they are species of least concern.
I think zoos need to have a balance between species that are being saved from extinction and those that are there to attract the public to pay money to save less popular species. I just wish there were fewer individuals of some of the ABC species.