So I have a 135 gallon tank with 1 red spotted sev. 3 geophagus sveni and 10 congo tetras. . I was under the impression the sevs are pretty peaceful.. let me tell you this guy is an ass. He is constantly chasing the geophagus during feeding and always trying to eat thr congos. Is there something wrong here or did I just get a jerk off sev. I feel bad for the other fish and really debating getting rid of him