Ok my Severum is 7 inches my green terror 7 inches they both live with juvenile Colombian red fin tetra 1 inch in size yeah they are in a largish group of 13 with fully mature adults so a little safety within the group but never have they had threat of been eaten .. the larger cichlids just not interested.. yet they will swallow a 2 inch prawn whole ! How does that work do they know fish are friends not food and wait for food ? Or I missing something ? Not that I want my Colombians to be eaten but evidently they could be but there not any thoughts on what’s going on here ? Am I just being lucky ?