Howdy! My three fav inverts are Gaint Clams, Fighting Conchs, and Queen Conchs. Fighting Conchs get up to 4 inches. While the Queen Conchs get up to a foot long.they keep the sand bed clean, and eat all types of algea:joy: [LINK VIOLATION - out of respect for the owner and operator of this site, please do not post links to competitors ] .:happy: HAPPY HUNTING!!!!