I finally got my hands on a couple Festae. I walked into a local chain store all prepared to be disappointed and low and behold the had some young Festae, Cubans and even a Flagtail. Well after purchasing a couple Festae I realized I need to grow these out before they can go into my 125. They are currently about 2 inches long and I would like them to get to about four inches before introducing them into the large tank. My question is, what is the minimum size tank I can keep them in without stunting there growth until they reach the four inch mark? Also, what is an average growth rate for these fish? Right now they are in a standard 20 gallon and I am doing 50% water changes weekly.