Based on the article in Politiken, there are only two remaining crocodiles in Copenhagen; both living in the butterfly house and both West African.
"Da der forelå gennemarbejdede dna-profiler af såvel C. niloticus som C. suchus, besluttede Zoo, at nu ville man have artsbestemt de to københavnerkrokodiller – havens eneste diller."
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"With the availability of DNA profiles for C. niloticus and C. suchus, the zoo decided that they wanted to identify the two Copenhagen crocodiles – the zoos only crocs."
Very nice! This means that all species in the crocodile order can be seen if combining Copenhagen with Krokodille Zoo; quite easy to reach from Copenhagen...