Some questions:
How do you definitely ID males and females of the same species when they are juveniles? - when most people buy them.
How can you be sure that 'peaceful' Malawi species will tolerate their own kind (or similar looking ones) once they are mature? - known as conspecific aggression.
I'm not asking for advice, rather I am posing these questions to fishlover500. I know that if you stock the right male / female ratios (or just females) it can work well, BUT can you be sure you don't end up with 3 males and one female?
Also, even if they are 'peaceful' Malawis, having pairs or more of any single species can run into problems when they mature... In the past, I've had multiples of Yellow Labs and Blue Aceii and have run into serious aggression problems once they are a year or so old.
KJ, I'm not trying to put this person off
but have seen numerous posts on forums where some person / LFS guy or other openly advocates buying multiples of a species, without enough consideration being given to what happens once they are all grown up.
I would say that breeding / keeping multiples of same species Malawis is a quite challenging / a big step up from keeping individuals of a species and should be given a lot of thought / research before venturing into.
Some things to consider:
If you want to breed a certain type of fish, keep a single species setup - to avoid hybridisation and aggression to others.
Is the tank big enough to stop conspecific aggression? - may need to be larger than you think.
Is it possible that one species of Malawi will take offence to anything that even ressembles its own species (colours / body markings)? - some will.
Is the LFS willing to take some of them back if it doesn't work out?
Do you have a spare tank to seperate offenders before they damage / kill each other? - this can happen in a matter of hours.
Good luck to those that do, but bad luck for the fish if it all goes wrong...
This site gives an indication of aggression and conspecific aggression levels of the fish it lists, amongst other useful info:
http/www.cichlid-forum.com/profiles/