Been reading on this site for a while. Learning a bunch of good stuff. Finally decided to join. Started out with a 10 gallon tank about 2 years ago and just moved up to a 30 gallon 4 months ago. Love the hobby! I have had the same yellow tail damsel the whole time and a friend just gave me his new clownfish that didn't get along well in his tank and to my surprise the damsel and clownfish get along great. So far that is. And thanks to all that share knolwedge on this site!