I have 4 ram cichlids.. 2 blue rams and 2 golden rams.. only the blue ones are quite often facing each other and try and peck each other.. peck isn't really the right word for fish but you know. I suppose this is territorial? I haven't really seen the golden rams do this, and I've had them for longer.
I have an 80 litre tank, and I've read somewhere this is the minimum size really, do I have too many cichlids?
Yes to be honest you've 2 too many. They may get on okay at the moment but if they do decice to pair things will become awkward and if spawning enters their minds downright nasty. Possibly resulting in some badly damaged/dead fish. Sorry.