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Tyrannochromis polyodon (younger synonym for T.macrostoma) is found all around Lake Malawi, mainly in rocky environments and intermediate zones from rocks to sand. Tyrannochromis polyodon has a higher body than T.macrostoma which is offered in trade. That's why this variant is often offered as a separat species. In the lake the males of these species can grow to 30 cm, females to about 25 cm. In the aquarium however they can grow taller because of a good feeding. The males can then grow to about 35 cm, females grow to about 30 cm. Tyrannochromis polyodon (T.macrostoma) is a real predator. Young fish belong to his favourite meal. You can best keep this species with multiple females and other big species in a large tank. We are dealing here with a species which likes eating fish, so we'll regularly have to offer him such kind of food like living small fish, mysis, krill,artemia, shrimpmix and they eat a lot of young fish when we keep them with mbunas. 
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