I just them yesterday, one seems to be more timid but the other has been out exploring the tankIt is almost impossible to tell unless they are actually breeding when their breeding tubes will show the difference.
What is their behaviour like? Do they get along or does one chase the other?
Should I just remove the timid one and place it in my other tank?If they are both males, once they settle in one will probably bully the other as he'll have decided the tank is all his.
Two females may coexist peacefully but there is still the possibility of conflict.
One of each could result in a dead female. These fish need to choose their own mates and a random male and random female from the store tank won't necessarily get on.
Watch them over the next few weeks and their behaviour towards each other will tell you if you need to separate them or if they get on together.
ThemLeave them for now but watch them. If possible sit a few feet away from the tank motionless for at least half an hour until they forget you are there. They'll behave normally and you'll be able to tell if the one is being bullied. If there is bullying, yes separate them.
I do! I have a cycled tank with since tetrasI think the fish in the first photo could be a female, as with all Cichlids you need to have an escape plan if things start to turn to custard.