I have been a hobbyist for 50 years specialising in Cardinal tetras although I have bred Corydoras,Neons,Bettas ,Gouramis and Cichlids.
I recently started breeding again after a break of a few years( due to other hobbies).
I currently have Cardinals ,Neons and Bronze Catfish about 5-7 weeks old and doung well.
There does not seem to be any aquarium clubs in Perth so I am looking on the web for interesting ideas for improving the early mortality rate of the spawning.
I start with about 200 fry and end up with about 50-60 after 6 weeks.