I'm under some relatively strong orders at home to add some relatively larger fish into the tank to add a bit more interest. Currently I'm stocked with 24 Cardinals and 12 embers along with a few ottos. Size is 120 x 50 x 50 and the plants have more growing in to do so more fish aren't going in yet. I've though about Congos and Pearl Gouramis but I'm struggling making a decision!! Any other good suggestions greatly appreciated!