M. opercularis is the paradise fish, it's just different colour morphs, eg: Apricot. I've bred my paradise fish a few times, alot like breeding Betta but more eggs. Mine are about 60-70mm SL, and the female can really pump out the eggs!!!
Being a coldwater fish, they breed at relatively low temps, 25-27 deg should be more than enough to get the male building his bubble nest. Make sure you isolate the male and then add females one at a time to see if he likes them i use a divider because they can be a little, over eager.
I absolutley love this fish. The male is by far one of the most attractive coldwater fish on Earth. When he starts flaring and carrying on for the female the colours are awesome!
GOOD LUCK!