A couple of days ago I just adopted a group of 7 fishes, 2 inches long each, orange-pinkish color, a black dot before the tail, very fast, active and peacefull. Looks like a kind of tetra fish. Anyone?
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Could well be the Rosy Barb, which is a common beginner fish (I believe, not being an owner of a tank at all).
They have a distinctive reddish colouration which is brightest when in the mating season, but otherwise much paler. Their scales seem to be slightly iridescent and they have a black dot at the base of the tail. The males have black tips to the fins, but the females do not have the black tips.