Hello fellow MFKers! For a science course Im taking, I was going to do how does supposedly high quality fish food and frozen "live" food effect the growth of a young ranchu compared to one being fed ordinary pellets. I was wondering if two 1.5 in. ranchus could be kept in a 10 gallon aquarium for a few weeks. I realize and understand the 20 gallons rule but it would only be for a few weeks. I just wanted to know if this sounded to cruel, Thanks