I have a cold tank and in it i have 6x black skirt tetras, a weather loach (which is just awesome) i have a rudd (which came from the wild so you couldnt buy one from the shop anyway), i have a black moor, a couple of shubumpkins, 2 goldsih, 3 gold and white goldfish, a fantail-shubumkin-y looking thing, a little minnow that looks just like a small orfe, but he isnt, a tench and 2 small loaches, and a small plec, oh and 1 shrimp that i hardly ever see! And a linear ghost koi.
They arent the most 'exotic' fish, but they are awesome to watch and makes the tank look very lively and colourful!