ok though all my emeralds got killed by my coral banded shrimp! youtube video of one of them getting killed! But when i took my tank apart to catch the shrimp, found 2 little emeralds! Much smaller than the first ones i put in the tank! I'm hoping a few more were hiding! Still sucked though! Be wary if you get an CBS! watch my youtube video of it beating the life out of an emerald! And I fed that sucker alot to keep him from doing it!