I was wondering what is the Growth Rate of the Gold Spilo. I know with ideal conditions it will probably grow faster but on average what is the rate of growth? Fish is currently in a 20 gallon tank and only 2 in long and another is in a 10 gallon and 1.5 in long. Upgrade tanks are coming but would like to know how much time I have, both were given to myself an brother as gifts. Thanks in advance.