dude... you still have as i count them, 18 (that's EIGHTEEN) fish that grow to one feet or more pretty easily. this 900 gallon tank you are supposedly going to get is probably 10' x 4' x 3' or something in that order. do you really think 17 fish that get over 1 foot long will be happy in a tank that size? 900 gallons is NOT a swimming pool or something... if you think about it, it's probably in terms of volume just about as much as a average full sized bed set up.
why keep bumping this post if you don't listen to what people have to say and keep asking about pretty much the same fish?