I've been a koi and fish keeper for a while now. I always tell myself that I would like to attend koi/Goldfish shows and compete for fun. These are two of my mature Orandas. Let me know what you think? These guys are in an indoor 75 gallon tank with sand bottom. Eat both homemade cooked food and soaken pellets. I was amazed at how my white and orange got so stressed out so quickly in the photo tank. Those are just the first few pictures and you can already see the stress in her tail.