Heres something to try, i found this its really interesting. The eggs that are put on sushi, you know the really orange ones? Well its expensive but extremely nutritious, in traditional Japanese sushi, they use untreated ones. If you can find the un preserved and untreated ones somewhere online, supposedly those work real well. I read an article about it. If you can find a supplier, let me know. Oh by the way, it really helps them, if you turn off the current in your tank for a short time in order to feed them. Also, put a little extra in the water, so she has something to eat, after ther clown and others have had their fill.