I know where kribs come from too ,it was just a suggestion , They behave more like new world cichlids than africans mentioned above and are colorful besides . I've kept them with fire mouths and many other species of fish as well without any serious problems , I've had red tail sharks do more damage to each other. Tank size matters , cfc you you seem extremely knowledgable , I posted A question a few days ago , how about trying to help me out ? , instead of jumping on my back when I offer some advice from my more than thirty years of expieriance in this hobby , to other people . how about it . Advice from one person to the next is almost always different , what works for one doesn't always work for the other .Ask 10 people the same [fish]question ,and you will probably get 10 different answers . No one person has all the answers .Fish are highly adaptable animals , and thats why !!!! They probably adapt to things better than people . "Why can't we all get along " . " Sorry for misleading anyone ".