I have a quick question... I receintly purchased a 10 inch silver arowana and am considering tankmates for the future. I've read that Flowerhorn cichlids are an absolute no-no, (I have 1 in another tank) but few people I've talked to say they've had no problems... Also considering Giant red fin gourami (also have 2 in another tank). Just wondering if they can co- exist at all. Thanx.