Rentapia flavomaculata.
Not too easy to spot in their tall vivarium - but when I was looking with @bongorob. I spotted 3 tiny toadletson a log; they were only about 5 mm long. I presume they were tree toadlets, but I did wonder if they could be offspring of the tiny species kept in this exhibit previously, in which case they would have been little rock or splash froglets, which the zoo has bred in the past. Any comments or suggestions?