I have not read your other threads, but what are your parameters? What fish died and how long did you have them? How old is the tank?
Clowns are fairly strong, so if this is a newer tank that was not cycled properly, the suggestion that it was ammonia poisoning seems reasonable. Weaker fish would be the last to go. If it is a newer tank, those anemones are the next in line to die. Especially if you do not have strong enough lighting.
The anemones are a concern, but let's focus on your fish first.