well ok guys now that i moved my mean a** red devil to his new 65 gallon i have an 2 empty 30 gallon tanks each house a red ear slider who during the summer go in the pond, i wanna no what cichild or nice mean fish i could keep in my 30 gallons if ever it gets to big it will go in either my 65 gallon or 180, i already have a 3 inch gt in my 30 gallon which i bought 2 days ago any other suggestiions?