Same with golds IME. I've only had the golds about half as long as the blues. They don't drop nearly as often, but they still do. It's really annoying because these fish are homebred and not farmed, they were even crossed out and back so the genetics are pretty diverse. They just seem to be really sensitive, they just up and die with no symptoms, no other fish in the tank having any issues, no water quality problems.
Because of that, I am really hesitant to charge the hefty price tag that they command, it just doesn't feel right to me.
In the past year i've just lost pretty much all interest in breeding them because of it. Did I mention they are really crappy parents also? lol.
I have no personal experience with bolivians but if I ever go dwarf cichlid again it will be between those and apistos.