Can guppies live in the same tank as Malawi fish?

Guppies and Malawi cichlids should generally not be kept together in the same tank. Malawi cichlids are territorial and can be aggressive, which can stress or harm smaller, peaceful fish like guppies. Additionally, the water parameters preferred by each species differ, with cichlids typically requiring harder, more alkaline water. It's best to house these fish in separate tanks that cater to their specific needs.