Well, that means it was probably handled with care on the way to the store. How did you
acclimate him?
Back the first of March I lost BOTH of the clowns in my nano on the same day. I don't have a clue what happened. They had been in the tank for months and were fine the day before. All of the corals and inverts were fine. I am telling you this just to say that sometimes we just don't know why a fish dies.
As long as you did not see any spots or odd looking patches on him before he died I would say wait a week or so and then go ahead and add another fish.
