Hi everyone! I've had a 400-gallon pond inside my home for over twenty years. Just moved my last gorgeous old koi to an 8000 gallon outdoor pond nearby with over 100 fish. He seemed overjoyed five days ago when he first entered the pond... had so much space and new friends. I watched him for an hour and felt good when I left him. Today I went to visit him and couldn't find him anywhere! He's 22 inches long... one of the largest fish in there! The pond has an elaborate netting system and is about 4 feet deep at one end. Its a smooth bottom and doesn't appear to have hiding places big enough for him. I'm freaking out... where is he????