In most animal groups, females put more effort into rearing children, and males compete for female attention. But what about seahorses and pipefish, in which males invest the most in offspring?
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Pagel, M. Polygamy and parenting. Nature 424, 23–24 (2003). https://doi.org/10.1038/424023a
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DOI: https://doi.org/10.1038/424023a
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