What?

[Zeoth]

Why's everyone saying peacock cause problems. What's so difficult about them? Just curoius.

 

[Ferris]

Asuming you're talking about the compatibility issues when kept with Mbuna - Aulonocara are nowhere near as aggressive as Mbuna and struggle to cope with them as tankmates. It can work but generally only if the tank is very large (5 footer or more) or the Peacocks are kept in groups to spread the aggression round.