a tiger SN is just as good at eating other fish my friend i have both and my TSN is way faster and more aggressive than my rtc and i think in general tsn are more aggressive feeders compared to the slow and calm RTC's , i can hand feed and pet my RTC and my TSN will try and swallow my hand and he has tried and he hits hard!!! there both great fish! just make sure they have there space with other large tankmate or should i say pondmates lol good luck