it depends on the size of the tank. As a rule i suggest that you have 1.5 square feet of tank per male and up to two females per male. So in a 3ft tank 2 trios would be ok as long as there is plenty of hiding places around.
and make sure there is at least 2 caves in there as the males will fight over the one cave. if you only have one then take it out and stock up on rocks and wood for them to hide in until you can get another cave.
If your tank is not that big then i would suggest putting the female in with the pair and putting the male in the smaller tank. this will reduce the stress on the smaller tank while ensuring that everyone remains happy and safe
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