Your neons might go missing but unless you have a pair you can only fit 1 full grown angel in a 30. 2 males or 2 females normally ends up with 1 dead fish. But to answer your question, Bolivians and angels get along just fine...Normally, sometimes you can get an angel that is a real #$%#^# and he ends up having a tank to himself..heh cichlids, go figure.