@Summer Tanager Gembira Loka and Jagat Satwa once had CGSes, so this might be the only one in Indonesian zoo/aquaria at the moment. I remember seeing a CGS feature in a SeaWorld Indonesia magazine from around 2012/2013, which probably hinted that they wanted to acquire CGSes, but during that time they're not as readily available as it is right now. CGS has been in Indonesian pet trade around the mid-2010s AFAIK.