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Genomic health in an asexual fish

The genome of the Amazon molly (Poecilia formosa), a parthenogenetic fish species, shows little genetic decay and a high degree of diversity. The genetic health of this asexual vertebrate is surprising given the accumulation of genomic damage that is expected to follow from asexual reproduction.

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Fig. 1: The Amazon molly (P. formosa) is an asexual fish with remarkable good genomic health.


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Correspondence to Pedram Samani or Max Reuter.

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Samani, P., Reuter, M. Genomic health in an asexual fish. Nat Ecol Evol 2, 595–596 (2018).

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