Probably right, but for now I am really enjoying the unusual dynamic an extra specimen presents. There have been some peculiar behavior between the three however. Several times now I've caught the two smaller of the the three nipping at rocks together. Every time I have witnessed this it has been right after the lights turn on in the morning or right before they go out at night. Also, it appears the largest individual is becoming more tolerant of the smaller two. She chases them less throughout the day and all 3 sleep together in the anemone at night.