Thanks, I must admit I'm completely in love with my whole tank!
They're all new and very young (and small!) - I only got the tank second hand 3 weeks ago, fully stocked, but most of the stocking was unsuitable for the tank size so over a few visits to the lfs I've taken my inherited stock in and bought the current stocking in my signature.
Was most chuffed today to test and see my ammonia and nitrite had dropped to zero - the bacteria in the existing media must have taken a hit in the move as I was showing low readings for both, but they seem to have caught up now, plus I've probably got a lighter bioload than the old stocking.
The ram looking fish are indeed the cupid cichlids - which I'd seen a few times previously but there's not a lot of information around about them. I going to get a few more if I can source some definite females - think mine are both boys.
The tigers are my favourites, even ahead of the cupids. I've not seen much aggression from them so far, other than curious nips at new arrivals, but noticed today that 2 of my tetras have nipped fins - it may not be the tigers, as the blue tetras are reputed to be nippy themselves, but I've decided that I won't replace any of the tetras when they go, and will stick to the cupids, tigers and pandas.