Just registered to this. Problem I have is my male apistogramma macmasteri died unexpectedly and the female is now alone.
Will find it difficult to get another male the same so can I put a male apistogramma of another type in with her, thinking a cacateude. I dont want them breeding. My tank is 160 litre with lots of real plants, wood and general hiding places. Water condition was is good, so not sure what happened to the male. Other fish in my tank are panda corys, cardinal tetras , cherry barbs and a pair of dwarf gouramis.
The problem is that they may fight. How big is the tank? The other issue is that Apistogrammas belong to species groupings and there is a possibility of hybrid breeding between species in the same grouping so you'd need to be careful which species male you tried.