sour_girl said:See I am worried that they wont take him when he gets too big; I find the lfs in my area are always not wanting to do trade ins..... I definitely cant get my 300 gal anytime soon, how long will it take the arrowana to grow to 3 feet? He is pretty for a Silver...
I would say 1' per year or so... As for green terrors, I strongly suggest you forget about them if you are looking for oscars. Mine lip-locks with my oscars and I will have to let the GT go for the oscar's sake.
I did keep Heckelli / geophagus with oscars, and they did fine. My oscars are quiet and non agressive...you could end up with an oscar with a bad temper tho. I have a blue dempsey (look at my avatar) with them, they are best friends. Less agressive than regular dempseys. You could also look at polypterus, some large catfish, look at my 130g tank and see...besides the GT it works well together.
Hope this helps!