As far as I know, the number of shrimp hasn't changed. To bad. Most of them are really active, though. There are a few sitting on the rocks but there are a lot of them swimming around the tank. I think that they are really getting used to it! Sadly, there is no snacks growing on the sides of the tank for the opae'ula to eat. Wow, though! I am surprised that they can still swim that fast! Now I have been feeding my opae'ula about three times a week. This time, all of my shrimp are red! I am really happy! To bad. None of my shrimp yet have eggs. I bet if they did have baby shrimp, though I wouldn't to be able to see them! Maybe soon, though. I have these opae'ula for just about a month. I hope there will be some eggs at least soon!