Pseudotropheus fuscus is a species of cichlid endemic to Lake Malawi where it is known from Nkhata Bay and Lion's Cove. It prefers areas with rocky substrates, usually at depths of 5 metres (16 ft) or less. It feeds on algae. This species can reach a length of 11 centimetres (4.3 in) TL. It can also be found in the aquarium trade.

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