Hi guys I'm new here. So I think I've made a vital mistake when buying some new fish. So I have a 300L with a neolamprologus cylindricus in and I got offered some caudopunctatus red fins in my excitement I did a quick search and they seemed to be a good fit the LFS said it should be okay so I paid for 6 of them. After getting home I've been told that the cylindricus shouldn't be paired with any other neolamprologus. Will my cylindricus kill my caudopunctatus if I keep them together? The tanks has plenty of rock work and caves even shells that no one is using. Sorry if my grammar is bad I'm dyslexic.