I really like my lemon jake, but I'm starting to think the jacobfreibergi are just too aggressive to work in an all male setup. I had to get rid of my rubescens, not a jacob, but a 'man made' variation of an aulonocara, maybe the line breeding made them more aggressive? I did lose an otter point jacob to this rubescens and I almost lost a walteri to the lemon, luckily I got him in a quarantine tank in time though. However, now that the walteri is out the lemon is taking it to my lwanda and anything else he decides to. It's crazy how stocks work for months and seemingly over night someone starts taking a beating. I'm ready to move him, just wanted to hear other experiences of jacobs in all male setups.