I have one tiger and one albino. I got the tiger first and added his now friend about three weeks after. At first they were very aggressive at each other and for awhile i was thinking about seperating them. but now they are buds. When i watch them it looks like they are proforming a secornized swimming act. they are competative during feeding. when i put food in they attack it like they've never been fed before. i also like telling my friends to try and pet them. yes they bite and its kind of funny! great pets. mine really arent that messy. i do notice a glittery mess of scales they burp up after they eat a feeder. they arent that old. prob like 5mouths. and im not sure if im feeding them enough or too much so if anyone has an in put please help cos im kind of winging it. and i would hate for my oscars to be hungry or overfed.