Hey guys im on my way to having my dream predator tank. A few weeks ago I bought my first two oscars. they were about an inch long and by now they doubled that size to two inches. I was wondering when it would be okay to add the neednosed gar into the mix. it is about 7-8 inches and not that aggresive. also going into the tank adventually would be an ornate birchir and a black ghost knivefish. I cant wait for these guys to get bigger and thanks for all the help.