peaceful cichlids ??? where ??? Didn't think there was any such thing
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Actually, I think there are a few cichlid species who are not out and out aggressive, but by and large that's what they are known for.. being bullies.
If you check the species names cited, I think you'll find they are not like the African lake cichlids in temperament. Angel fish are cichlids, from South America, and they are relatively peaceful compared to many of the African lake species too. I wouldn't keep them with very small or timid species, but they're not like some of the really nasty lake cichlids. Main reason I don't keep the Africans, I just don't care for their temperament much, though some of them are truly beautiful.