They are capable of changing sexes and very well may have and with adding a juvenile clown, If it hasnt changed sexes, it will and either bond or display clown hierarchy being the more dominant than the male. They become greedy and try to eat most of the food that gets into the tank (which is one reason the males don't grow as large). They often aggressively protect their home whether that be an anemone, a nesting site, a clay pot or the entire fish tank.
Welcome! I have a 3 year old clownfish that "broke out of jail" and joined my two young clowns. I was worried at first but they've been doing great for 5 months now. With that said, I've heard plenty of horror stories as well. The female may choose to kill the male or she may accept him. We never know until it happens.
