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Petrotilapia tridentiger is found on every rocky environment along the western side of the lake from Chitande in the north towards the ultimate south and along the eastern coast between Ikombe in Tanzania and Tumbi Point in Mozambique, except on the islands. This variant is from Nkanda in the northern part of the lake. In the lake the males of these species can grow to 14 cm, in the aquarium however they can grow taller because of a good feeding. The males can then grow to about 17 cm, females grow to about 14 cm. Petrotilapia tridentiger can behave intolerant against equal species, against other inhabitants they are in general tolerant. You can best keep this species together with multiple females and other mbunas in an aquarium with a lot of hiding places. In the lake they are mainly feeding themselves with algae and evertebrates. In the aquarium they are comfortable with any food. They take everything they get offered, like spirulina pellets, mysis, artemia, cyclops and shrimp-peas mix. Food rich of algae like spirulina pellets or flakes is very important to them so this should not be missing on their menu. 
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