More than meets the eye

Within the Brazilian mangroves resides some of the most unique organisms on Earth: killifish. Specifically, two species within the genus Kryptolebias, which are the only known vertebrates to reproduce through self-fertilisation. What impact does this unusual mating system have on their population genetic structure? Dr Waldir Berbel-Filho ventured into the inhospitable mangroves to discover the answer.

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