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Perissodus microlepis

Species of fish From Wikipedia, the free encyclopedia

Perissodus microlepis
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Perissodus microlepis is a species of cichlid endemic to Lake Tanganyika. It can also be found in the aquarium trade.[2] This species reaches a length of 11 centimetres (4.3 in) TL. It is a scale-eating 'parasite' on other fish species. It occurs in two distinct morphological forms. One morph has mouth parts twisted to the left, enabling it to eat scales off its victim's right flank. In contrast, the other morph, whose mouth is twisted to the right, eats scales off its victim's left flank. The relative abundance of the two morphs in populations is regulated by frequency-dependent selection.[3][4][5][6]

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