I feed my rtc with arapaima XDD... i really hate my rtc, every fish that is near infront of him, he would eat it, no matter how big it is. "I moved my arapaima to a bigger tank 150 x 50 x 70, that tank is full of predator fish (community fish tank), my arapaima was 12 cm long, because i was thinking that it would be better if i moved him to that tank (friends you know?), then I leave it for a hour, when i came back, I was looking for the arapaima, and i was asking where is he???, and when I look up to the RTC's stomach... –_– THEN I WAS LIKE RAMPAGING, AND RAPE THAT RTC AND HIT IT WITH A HAMMER, IM NOT GONNA STOP UNTIL HE THROW OUT THE ARAPAIMA FROM THE RTC'S STOMACH, I REALLY HATE IT, AND I NAMED THE RTC, DEVIL CATFISH. FFFF*****C********* that rtc, I REALLY LOVED THAT ARAPAIMA