I recently got my first silver arowana and he's around 5-6 inches. I seen lots of info on everything except tankmates. I was looking into getting a p.bass and a red tail catfish, would these be suitable tankmates? I know long term they are ok but unsure about compatability while they are all small. My Silver is currently in a 40g and will be moved to my 125g within a month and I plan on getting some tankmates at the same time. He will eventually be moved to my 1000g pond when he grows out. Thanks in advance.