No need to be patronizing. Most zoos (even the major ones) still obtain the majority of their reptiles, amphibians, invertebrates and fish, in particular marine species, from commercial suppliers and at best from private breeders. There are a few exceptions, like easily bred species such as
Amphiprion ocellaris or species like
Neurergus kaiseri in official zoo breeding programs, and there are a few dedicated zookeepers / curators who might bring in offspring from their private breeding stock. Some zoos even manage to breed rather tricky species on a regular base (like the aquarium at Zoo Berlin & jellyfish). But where do you think the butterflies for the popular butterfly gardens, mudskippers, ant colonies,
Hadogenes scorpions, African bullfrogs / cane toads, the whitish salties at Stuttgart / Eskilstrup (...) or the
Bitis parviocula zoo specimens (as a recent example) come from? Not captive-bred from zoos, I can tell you that. Some zoos & aquaria might pretend that they breed all the animals they display themselves, and a few might actually do, but you should know better than to take me and others here for ignorant, starry-eyed fools.
@TeaLovingDave and
@zoogiraffe 