i have a columbia shark that i recently took out of my 120gal Community cichlid tank. He is about 4"-5" and i have him in a 30gal right now that hos a lil bit of salt but its also my hospital tank. I dont wana turn the tank in to a full brackish tank. My question is can he go in to my 500gal Gold fish pond and survive till winter or can i put him in my 20gal saltwater Aquapod. If i cant do ither of thoes he might b up for addoption.