Others within the group will all be males and generally diminish in size - a reflection of their position in the 'pecking order' of the group. If the female dies the breeding male changes sex and grows accordingly. The other males also grow as their position in the group is now increased. The largest of these becomes the new breeding male. Pomacentridae Clownfish are actually in the same family as damselfish but usually the two are separated into anemonefish, or clownfish, and damselfish.
Clowns can be very colorful and are very hardy in captivity.
The clownfish live in 'symbiosis' with certain anemones, which means they live together with both the clownfish and the anemone benefiting from each others company. Clownfish can be kept in an aquarium with or without an anemone but if you try to keep an anemone you should make sure and meet its special needs. The three-banded Clown, or Amphiprion tricinctus, is a real special clownfish in as much as it is not that common and is often confused with other ones. It is considered among the hardy ones but still requires great care to keep it healthy and appears to really need a host anemone. Take a look at some of the different species of Philippine anemonefish.