Sexing is harder than common rams. Males may have slight extension / trailing rays to the tips of their tail / dorsal fin, may take on slightly more vivid colouration and may have a less golden stomach. The problem is that thew fish often have to be of an adult size and in full colour for any differences really to show. Others may have better information, but I have never seen a deffinative method. Its proberbly best to buy a small group of juveniles and let pairs form, as with most cichlids.
For spawning, the fish proberbly need to be atleast 2" in length. After conditioning on a heavy diet of meaty / wormy live / frozen foods fish spawn usually on a flatish horiszontal surface, like a smooth stone. The parents move hatched fry to pits in the substrate before they become free swimming, then guard them afterwards )often where the trouble starts).
To get the best results, neutral to slightly acid quite soft water will be needed. They will spawn in harder, more acidic water but the harder it gets the less likely they are to spawn and the less chance there are off the eggs hatching. Temperature has to be quite warm from memory ( 78-84f).
Fry are quite easy to raise, like with most dwarf cichlids starting off on baby brine shrimp and micro worms.
a little info i found..