I have a 15in CK and he doesnt eat feeders. I have had him with other fish and havent had a issue. But they were all around 10in. I have this one frontosa that is growing fast and hes becoming a bully sometimes. The frontosa is 4-5in. I dont want to get rid of him. Is there any chance I could put the frontosa in with the CK? If, not could I do it when the Frontosa is larger? Sorry for the stupid question. Im 99% sure what the answer is but I want to hear what you guys think. Thanks