Today I found an egg sack stuck the base of my finger leather coral. I am a little shocked since I have a saddleback clown, true percula clown, sixline wrasse, and a lemonpeel angelfish. Is it possible for the two clowns to have mated and lay eggs? The sack is about a centimeter or centimeter and a half in size. Last night the saddleback clown was sitting in the leather, which I have never seen him do before. All day today both the clowns are hovering over the leather rather than roaming around the tank as normal.