Was the pair of caca from a good and strong source? I don't see any problem with your setup, however i see there might be a problem in the fish itself. caca are easy to breed, 2 months can be 8 spawns.
Was it sold as a true pair(male and female) and not male and sneeker male. How big are they?
I do not see the problem of sneeker males overseas since mass-in-breeding is a no no for them. Selective breeding is ideal, which result in better colours etc etc.
Cheers!
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