I am sure the cherries will, i haven't put any in my tank with cories as there is just one snail in there (gasp, its true! lol). I am gonna make them hopefully beginning of this week. I could send you a sample to try with some fern if you wait until next week to order. I could certainly cater some cookies to have some more bottom feeder friendly ingredients. I am going to try making up some new recipes to try and focus the nutrition for some of my different species of shrimp and my snails and fish. I have lots and lots of tall java ferns, to answer that question. I will shoot you a pm on monday or tuesday and let you know how the cookies came out.