Hey do y'all remember they days when a lot of zoos with elephants used to mix both Asians and Africans in the same habitat?
I noticed they were phasing out that approach more or less around the 2000's/2010's. And much of the enclosures that did don't meet today's standards of elephant husbandry.
I have yet to see of these. That approach was phased out in my country a few years before I was born.
My local zoo (Rio de Janeiro, state of Rio de Janeiro, Brazil) temporarily mixed an adult Asian elephant cow with two African elephants calves in 1995. They were quarantined for a month in her enclosure before being sent to their final destination, Brasília.
The São Paulo zoo (São Paulo, state of São Paulo, Brazil) mixed African and Asian elephants between 1973, when two calves arrived from Africa, and around 2000, when their last Asian elephant at the time passed away. The zoo did acquire two more Asian cows in 2012, but never mixed them with their late African counterpart, Terezita.
Rio de Janeiro had three female Asian elephants, two of which had been gifted by notable circus owner Orlando Orfei, in 1976. Since keeping all these animals proved to be too costly, the zoo "evicted" Margareth and Nery, so Orfei gave them to FZBH (Belo Horizonte, state of Minas Gerais, Brazil), which already had an African elephant cow at the time. The Belo Horizonte zoo imported two more
Loxodonta africana the following year.
I am quite sure Topeka and Louisville still mix both species.