Six Line will be added eventually. First though I need a Psuedochromis Springeri and an H. Chrysus. Six Line may come before or after the final Tang I'm hoping to add.I just checked my build thread the “original” wrasse that helped me was actually Halichoeres leucoxanthus the current one is H. chrysus but I think both would do the job. Second one I purchased back then was a young six line wrasse also very effective against flatworms.