I've seen them housed in the same tank with no issues.
how big is the tank and is there structure in the tank.
I currently have what I beleive are two females in a planted 75 with plenty of cover..there is some aggression but the tank is big enough and there is enough cover to keep it peaceful..
i have a 33g tank, right now there are not alot of plants but by the time they move there from the quarantine tank there should be alot more. I also have driftwood and some ornaments for hiding. Is that what you meant by structure?
If they are similar to the Apistogramma Ramierez then the Male with have long extented dorsal fin while the femaile will be slightly shorter and not as elaborate.
<-- Female with a stumpy dorsal fin. The male will also have an extended crown at the front of the dorsal fin.
they may get feisty. each male will most likely begin to stake out his own territory in the vain and misguided hope that a female will somehow magically appear. ime they need at least 2.5-3 sq ft of floor space to call their own. the more space the better.
Sexing them isn't easy, the extended dorsal fin and the longer extensions on the caudal fin aren't sure fire ways anymore. Just watch them - by their behavior you will be able to determine their sex. If they hang together as they mature, you just might have a pair. However, if you do have two males, there might be trouble. They will need room to get away from each other, and I am not sure they will get it in a less than 55g tank or one with a 48" foot.
They are great fish, and get much more interesting when a member of the opposite sex is around...
I have 2 males in a 55g and they each think they own half the tank. When one crosses the imaginary line, the other sends him on his way. I have lots of hiding places and decor, but they both have their own territory.