Other than the blind cave tetra how often are troglofauna and stygofauna exhibited globally? I understand it is extremely difficult to obtain olms outside their range, but there are other blind salamanders and fishes might be exhibited. I understand two species of blind cave fishes from Oman and Somalia are maintained in UK zoos.
They are, including whip spiders, several cockroach species, scolopendra etc. Furthermore, bats (mainly Carollia perspicillata) are displayed-whether they are actual cave dwellers or not. And occasionally amphibians such as Neurergus kaiseri (Tierpark Hagenbeck).
According to Zootierliste, three European zoos exhibit olms. Dallas occasionally breeds the Texas blind salamander (see Texas blind salamander | www.dallaszoo.com)
@Dassie rat: regarding olm husbandry: the Hermannshöhle is a cave, not a zoo. ^^ Höhle [German] = cave
