I just got a 5" South American Gar and a 5" Freshwater Barracuda (red tail baracuda). I put them in the tank with a 4" Silver ARo and a 5" Geophagus. As soon as they were in after about 5 minutes the SA got up an snapped at the Arowana and took off a big piece of his tail. I kno that the arowana would get beat up by the SA. I put a few feeder guppies in and the SA is eating them. I was hoping maybe this would distract him from my arowana and keep him busy and full. Is there any way i can help my arowana. I have a 75 gallon tank with a 9" wolf fish, 2 14" RB Pacu, a 5" PBass, and a 12" Clown Knife. I also have a 10gallon tank but with no heater. I was hoping i could either put the arowana in the 10 gallon tank, put the SA in the 75 gallon tank or somehow make a seperator for the arowana and the gar that neither could fit through... any ideas?