ok yeah who dug up a 4yr old thread lol, but yeah either way i agree with spherical cube's answer, RT got punked because he was new in the tank and the GT was established, if it was the other way around and you were adding a GT juvie to a RT's tank then it would probably get killed, my little male festae i have is only 3in and hes been in with much larger fish than him since he was 1.5in (all other fish AT LEAST double his size at any time, most being even bigger than that) and he has always been able to hold his own